Upgrading Java to Jre6 from Jre1.6.0_07 problems

Just a note for those of you who break things like me!

I upgraded java from 1.6.0_07 that was already on there or was installed from the windows installer to the latest version of java that offered itself to me in a nice little pop up window...stupid of me, I know...

Anyway, after that the 0.9 host wouldn't run...sucks. Fiddled around with stuff and found the problem.

My directory structure looks something like this for the java stuff:

C:\Program Files\Java\
\jre1.6.0_07\
\jre6\

The jre1.6.0_07 was the original one and contains a working structure. However, once I updated the java dist it changed the classpath to jre6 which didn't have the right files. To replicate my random fix you need to copy a total of 4 files from jre1.6.0_07 to jre6 and reinstall Java3D from here [java3d.dev.java.net]. In my case I grabbed the j3d-1_5_2-windows-i586.exe one and installed it. Just pick the defaults.

Now, to the 4 files I copied...

******************************************

From C:\Program Files\Java\jre1.6.0_07\lib\ext
you need

j3d-org-java3d-all.jar
RXTXComm.jar

to be copied to

C:\Program Files\Java\jre6\lib\ext

******************************************

From C:\Program Files\Java\jre1.6.0_07\bin
you need

RXTXSerial.dll
RXTXParallel.dll

to be copied to
C:\Program Files\Java\jre6\bin

******************************************

That's it. Don't need to change anything else. You should now run your normal RepRap-host.bat file and it should work. If not, don't mention that I helped you cause I didn't!

Demented

Edited 1 time(s). Last edit at 12/01/2008 01:55AM by Demented Chihuahua.

Demented Chihuahua Wrote:
-------------------------------------------------------
> Just a note for those of you who break things like
> me!
>
> I upgraded java from 1.6.0_07 that was already on
> there or was installed from the windows installer
> to the latest version of java that offered itself
> to me in a nice little pop up window...stupid of
> me, I know...
>
> Anyway, after that the 0.9 host wouldn't
> run...sucks. Fiddled around with stuff and found
> the problem.
>
> My directory structure looks something like this
> for the java stuff:
>
> C:\Program Files\Java\
> \jre1.6.0_07\
> \jre6\
>
> The jre1.6.0_07 was the original one and contains
> a working structure. However, once I updated the
> java dist it changed the classpath to jre6 which
> didn't have the right files. To replicate my
> random fix you need to copy a total of 4 files
> from jre1.6.0_07 to jre6 and reinstall Java3D from
> here
> [java3d.dev.java.net]. In
> my case I grabbed the j3d-1_5_2-windows-i586.exe
> one and installed it. Just pick the defaults.
>
> Now, to the 4 files I copied...
>
> ******************************************
>
> From C:\Program Files\Java\jre1.6.0_07\lib\ext
> you need
>
> j3d-org-java3d-all.jar
> RXTXComm.jar
>
> to be copied to
>
> C:\Program Files\Java\jre6\lib\ext
>
> ******************************************
>
> From C:\Program Files\Java\jre1.6.0_07\bin
> you need
>
> RXTXSerial.dll
> RXTXParallel.dll
>
> to be copied to
> C:\Program Files\Java\jre6\bin
>
> ******************************************
>
> That's it. Don't need to change anything else. You
> should now run your normal RepRap-host.bat file
> and it should work. If not, don't mention that I
> helped you cause I didn't!
>
> Demented

I put all those files in my JRE6 directories and things still aren't working. Any other suggestions of things to look at?
Tim

you also did the install of Java3D? Other than that, no. Sorry. It worked for me so I thought I would post it.

Was it working before the JRE6 update?

Demented

Yep, I did the 3d a couple times and the files mentioned. So far nothing. I'll check things over again.

This is my first installation. I just finished the gantry system. I've got the Sanguino working, but not with motor drivers yet, that's another problem. I really want to get this thing working, it's almost there.

Thanks,
Tim

I got it to work....finally. I had to copy a few more files. I kept running it and every time I got a "caused by" I would search for the file and copy it to the same directory structure in JRE6. The files it usually couldn't find were in Java3d.
Now I just have to get my Sanguino and motor drivers working. Fun..

Thanks for the help
Schultz