It looks like the fix discussed in
https://www.axisandallies.org/forums/topic/37967/triplea-posting-to-forum-currently-does-not-work
will resolve your issue, too.
Getting ocasionally an Java Heap space error.
Sometimes I am able to get rid of it by simply erasing the old cache files but it is just annoying right now.
Any way arround the get a heap space error?
Sure.
Either increase (e.g. double) the _XmX and _XmS-settings inside the file
‘triplea.vmoptions’ to be found in the TripleA-installation directory
or download and install the current pre-release that got rid of the XmX and XmS settings in favor of a more dynamical assignment depending on the system RAM.