Hello, When I type ./reprap-host.sh in my terminal, I get: gerard@hermes:~/Installations/RepRap/reprap-host-20080523$ ./reprap-host.sh Exception in thread "main" java.lang.NoClassDefFoundError: gnu/io/PortInUseException Caused by: java.lang.ClassNotFoundException: gnu.io.PortInUseException at java.net.URLClassLoader$1.run(URLClassLoader.java:217) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:205) at java.lang.ClassLoader.loadClass(ClassLoader.java:323) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294) at java.lang.ClassLoader.loadClass(ClassLoader.java:268) at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336) Could not find the main class: org.reprap.Main. Program will exit. Could you help me? G https://reprap.org/forum/read.php?12,18760,18760#msg-18760 Sat, 10 Oct 2026 02:00:40 -0400 Phorum 5.2.23 https://reprap.org/forum/read.php?12,18760,76598#msg-76598 https://reprap.org/forum/read.php?12,18760,76598#msg-76598 sxt173 RepRap Host Fri, 11 Mar 2011 01:09:29 -0500 https://reprap.org/forum/read.php?12,18760,19253#msg-19253 https://reprap.org/forum/read.php?12,18760,19253#msg-19253 I get still some errors:

Experimental: JNI_OnLoad called.
Stable Library
=========================================
Native lib Version = RXTX-2.1-7
Java lib Version = RXTX-2.1-7
Exception in thread "GUI Poll" java.lang.NullPointerException
at org.reprap.gui.botConsole.GenericExtruderTabPanel.refreshTemperature(Unknown Source)
at org.reprap.gui.botConsole.GenericExtruderTabPanel.access$100(Unknown Source)
at org.reprap.gui.botConsole.GenericExtruderTabPanel$1.run(Unknown Source)
Exception in thread "GUI Poll" java.lang.NullPointerException
at org.reprap.gui.botConsole.GenericExtruderTabPanel.refreshTemperature(Unknown Source)
at org.reprap.gui.botConsole.GenericExtruderTabPanel.access$100(Unknown Source)
at org.reprap.gui.botConsole.GenericExtruderTabPanel$1.run(Unknown Source)
Exception in thread "RepRap" java.lang.NullPointerException
at javax.swing.ImageIcon.(ImageIcon.java:155)
at org.reprap.gui.botConsole.PrintTabPanel.initComponents(Unknown Source)
at org.reprap.gui.botConsole.PrintTabPanel.(Unknown Source)
at org.reprap.gui.botConsole.BotConsoleFrame.initComponents(Unknown Source)
at org.reprap.gui.botConsole.BotConsoleFrame.(Unknown Source)
at org.reprap.gui.botConsole.BotConsoleFrame$1.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:602)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:138)

Only one window is displayed (the one with XYZ axes), while the docu shows two windows. Is it normal? Is it important?]]> gerard94 RepRap Host Tue, 09 Dec 2008 11:38:59 -0500 https://reprap.org/forum/read.php?12,18760,19180#msg-19180 https://reprap.org/forum/read.php?12,18760,19180#msg-19180 sudo chown [name] [files] did the trick.

now, the application starts, i can load pieces. there is an error-message, still, that tells me i am using an old open gl, but it does not seem to break anything]]> loonquawl RepRap Host Sun, 07 Dec 2008 14:06:30 -0500 https://reprap.org/forum/read.php?12,18760,19170#msg-19170 https://reprap.org/forum/read.php?12,18760,19170#msg-19170 - use eclipse's svn perspective to connect to [reprap.svn.sourceforge.net]
- grab trunk->reprap->host
- switch to java perspective and add all the jars and zips I could find within the project
- run org.reprap.Main

Just for good measure, I deleted reprap.properties and let the app generate a new one.

This version of the host has known bugs. I wouldn't recommend using it unless you're keen on debugging.]]> degroof RepRap Host Sun, 07 Dec 2008 02:04:26 -0500 https://reprap.org/forum/read.php?12,18760,19169#msg-19169 https://reprap.org/forum/read.php?12,18760,19169#msg-19169
1. get the host zip from here [sourceforge.net] and unzip into /usr/lib/reprap
2. use synaptic package manager to install rxtx and libvecmath
3. get the linux java3d zip from here [java3d.dev.java.net] drill down to j3d-jre.zip and extract the .jar files to /usr/share/java and the .so files to /lib
4. get the .jar files from here [reprap.svn.sourceforge.net] here [reprap.svn.sourceforge.net] and here [reprap.svn.sourceforge.net] and put them in /usr/share/java
5. use preferences->appearance to turn off visual effects
6. run /usr/lib/reprap/reprap-host

There's probably an easier way but this happened to work. I got an exception because I don't have a serial port on my laptop and a nullpointer exception related to ImageIcon but neither prevented the app from coming up. The reprap.properties file ended up in .reprap under my home directory.]]> degroof RepRap Host Sun, 07 Dec 2008 01:35:08 -0500 https://reprap.org/forum/read.php?12,18760,19164#msg-19164 https://reprap.org/forum/read.php?12,18760,19164#msg-19164 I had the same errors as you earlier, including the Vectmath. I searched for the files that say it was "caused by" Which seem to be in Java3D\lib\ext, then I copied those files in the JRE\lib\ext. If there are others then copy them to the same JRE directory structure as where you find them. After that I got the BOT console to work. I haven't hooked it up to anything yet, but we shall see.

Thanks guys for the help
Schultz]]> Schultz RepRap Host Sat, 06 Dec 2008 23:25:05 -0500 https://reprap.org/forum/read.php?12,18760,19160#msg-19160 https://reprap.org/forum/read.php?12,18760,19160#msg-19160 forums.reprap.org]]]> nophead RepRap Host Sat, 06 Dec 2008 18:52:09 -0500 https://reprap.org/forum/read.php?12,18760,19158#msg-19158 https://reprap.org/forum/read.php?12,18760,19158#msg-19158 here goes:
loonquawl@lqlaptop:~/reprap-host-0.8.1$ ./reprap-host.sh
Exception in thread "RepRap" java.lang.NoClassDefFoundError: org/j3d/renderer/java3d/loaders/STLLoader
at org.reprap.gui.STLObject.(Unknown Source)
at org.reprap.gui.RepRapBuild.createSceneBranchGroup(Unknown Source)
at org.reprap.gui.Panel3D.initJava3d(Unknown Source)
at org.reprap.gui.Panel3D.initialise(Unknown Source)
at org.reprap.gui.RepRapBuild.(Unknown Source)
at org.reprap.Main.createAndShowGUI(Unknown Source)
at org.reprap.Main.access$2400(Unknown Source)
at org.reprap.Main$23.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:209)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:597)
at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:273)
at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:183)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:173)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:168)
at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:160)
at java.awt.EventDispatchThread.run(EventDispatchThread.java:121)
Caused by: java.lang.ClassNotFoundException: org.j3d.renderer.java3d.loaders.STLLoader
at java.net.URLClassLoader$1.run(URLClassLoader.java:200)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:188)
at java.lang.ClassLoader.loadClass(ClassLoader.java:306)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:276)
at java.lang.ClassLoader.loadClass(ClassLoader.java:251)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:319)
... 16 more



could anybody point me to some diagnostics i could run?

thanks a lot]]> loonquawl RepRap Host Sat, 06 Dec 2008 18:28:05 -0500 https://reprap.org/forum/read.php?12,18760,19135#msg-19135 https://reprap.org/forum/read.php?12,18760,19135#msg-19135 davidgoodenough RepRap Host Fri, 05 Dec 2008 14:20:10 -0500 https://reprap.org/forum/read.php?12,18760,19129#msg-19129 https://reprap.org/forum/read.php?12,18760,19129#msg-19129
C:\Program Files\reprap-host-20080523>java -cp ".;.\reprap.jar;C:\Program Files\
Reprap\;C:\Program Files\Reprap\reprap.jar;C:\Program Files\Java\shared\*" -Xmx3
84M org/reprap/Main
Exception in thread "AWT-EventQueue-0" java.lang.NoClassDefFoundError: javax/vec
math/Color3f
at org.reprap.Preferences.(Unknown Source)
at org.reprap.Main.initComms(Unknown Source)
at org.reprap.Main.access$2200(Unknown Source)
at org.reprap.Main$22.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: javax.vecmath.Color3f
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
... 12 more

Any suggestions with this one?]]> Schultz RepRap Host Fri, 05 Dec 2008 11:41:21 -0500 https://reprap.org/forum/read.php?12,18760,19107#msg-19107 https://reprap.org/forum/read.php?12,18760,19107#msg-19107
One of the post above point out this in the readme file:

"The software is now run so it can find the libraries it needs at
a fixed location (/usr/share/java in Linux)"

I can't find this directory structure in any of the JAVA and RepRap stuff. Where should these be, what's before the /usr/.

Here is what I get:

C:\Program Files\reprap-host-20080523>rem reprap-host -- runs Reprap Java host c
ode with an appropriate classpath

C:\Program Files\reprap-host-20080523>rem Amount of RAM to allow Java VM to use
C:\Program Files\reprap-host-20080523>set RAM_SIZE=384M
C:\Program Files\reprap-host-20080523>rem reprap.jar file and stl file
C:\Program Files\reprap-host-20080523>set REPRAP_DIR=C:\Program Files\Reprap
C:\Program Files\reprap-host-20080523>rem Java3D and j3d.org libraries
C:\Program Files\reprap-host-20080523>set JAVA_LIBRARY_DIR=C:\Program Files\Java\shared
C:\Program Files\reprap-host-20080523>rem cd so we can find the reprap-wv.stl file. Can we avoid this??
C:\Program Files\reprap-host-20080523>IF NOT EXIST reprap-wv.stl cd "C:\Program
Files\Reprap"
C:\Program Files\reprap-host-20080523>java -cp ".;.\reprap.jar;C:\Program Files\
Reprap\;C:\Program Files\Reprap\reprap.jar;C:\Program Files\Java\shared\*" -Xmx3
84M org/reprap/Main
Exception in thread "main" java.lang.NoClassDefFoundError: gnu/io/PortInUseException
Caused by: java.lang.ClassNotFoundException: gnu.io.PortInUseException
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClassInternal(Unknown Source)
Could not find the main class: org/reprap/Main. Program will exit.

C:\Program Files\reprap-host-20080523>if ERRORLEVEL 1 pause
Press any key to continue . . .]]> Schultz RepRap Host Thu, 04 Dec 2008 19:43:39 -0500 https://reprap.org/forum/read.php?12,18760,19076#msg-19076 https://reprap.org/forum/read.php?12,18760,19076#msg-19076
David]]> davidgoodenough RepRap Host Thu, 04 Dec 2008 06:01:15 -0500 https://reprap.org/forum/read.php?12,18760,19072#msg-19072 https://reprap.org/forum/read.php?12,18760,19072#msg-19072
I'm pretty much stumped. I've tried everything I can think of.

Is there any way to get more error reporting or a diagnostic mode or anything that will help sort this out?

Thanks,

Leland]]> Leland RepRap Host Wed, 03 Dec 2008 23:47:31 -0500 https://reprap.org/forum/read.php?12,18760,18957#msg-18957 https://reprap.org/forum/read.php?12,18760,18957#msg-18957
In the readme file of reprap-host-20080523.zip, I can read:

"The software is now run so it can find the libraries it needs at
a fixed location (/usr/share/java in Linux)"

Could you explain which libraries should be placed there, and in which subdirs? Thanks.

G]]> gerard94 RepRap Host Mon, 01 Dec 2008 14:08:23 -0500 https://reprap.org/forum/read.php?12,18760,18915#msg-18915 https://reprap.org/forum/read.php?12,18760,18915#msg-18915 emt RepRap Host Sat, 29 Nov 2008 03:54:29 -0500 https://reprap.org/forum/read.php?12,18760,18906#msg-18906 https://reprap.org/forum/read.php?12,18760,18906#msg-18906
David]]> davidgoodenough RepRap Host Fri, 28 Nov 2008 17:16:03 -0500 https://reprap.org/forum/read.php?12,18760,18887#msg-18887 https://reprap.org/forum/read.php?12,18760,18887#msg-18887
You say at least for linux. Is windows generally a problem with Java?]]> emt RepRap Host Fri, 28 Nov 2008 10:13:10 -0500 https://reprap.org/forum/read.php?12,18760,18871#msg-18871 https://reprap.org/forum/read.php?12,18760,18871#msg-18871
One thing to check is that you have not updated your java since putting the RXTX code into the /lib/ext directory. Each move changes the directory that gets used.

Really putting the code into the JVM directories is the wrong thing to do. I am working on a new directory layout (at least for Linux) which removes the need to do this completely, and means we can distribute a binary image which will run out of the box.

David]]> davidgoodenough RepRap Host Fri, 28 Nov 2008 04:43:04 -0500 https://reprap.org/forum/read.php?12,18760,18857#msg-18857 https://reprap.org/forum/read.php?12,18760,18857#msg-18857
G]]> gerard94 RepRap Host Thu, 27 Nov 2008 20:10:15 -0500 https://reprap.org/forum/read.php?12,18760,18810#msg-18810 https://reprap.org/forum/read.php?12,18760,18810#msg-18810
As to the moduser thing...that parts been bugging me for a while. Thanks for posting the real command!

Demented]]> Demented Chihuahua RepRap Host Wed, 26 Nov 2008 11:28:40 -0500 https://reprap.org/forum/read.php?12,18760,18780#msg-18780 https://reprap.org/forum/read.php?12,18760,18780#msg-18780
This message could be from me to - exact same system with the exact same problem. I've tried re-installing everything and all seems well, however for some reason the main thread isn't finding or gaining access to the serial port.

Anybody got any ideas?

Leland]]> Leland RepRap Host Wed, 26 Nov 2008 00:05:04 -0500 https://reprap.org/forum/read.php?12,18760,18760#msg-18760 https://reprap.org/forum/read.php?12,18760,18760#msg-18760
When I type ./reprap-host.sh in my terminal, I get:

gerard@hermes:~/Installations/RepRap/reprap-host-20080523$ ./reprap-host.sh
Exception in thread "main" java.lang.NoClassDefFoundError: gnu/io/PortInUseException
Caused by: java.lang.ClassNotFoundException: gnu.io.PortInUseException
at java.net.URLClassLoader$1.run(URLClassLoader.java:217)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:205)
at java.lang.ClassLoader.loadClass(ClassLoader.java:323)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:294)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
Could not find the main class: org.reprap.Main. Program will exit.

Could you help me?

G]]> gerard94 RepRap Host Tue, 25 Nov 2008 11:09:46 -0500