I just did a new Ubuntu16.04 install and installed pronterface. However, I get the error:
[ERROR] Saving failed for set last_window_height:'PronterWindow' object has no attribute 'rc_filename'
at every startup and the window defaults to the original size. Not what I last sized it to,

tj

It seems that proterface fails to create its configuration file. It does create the directory though so a simple

touch ~/.config/Printrun/pronsolerc

is enough to fix that issue