Message11777

Looks like nobody had any ideas ... :) This is probably too late as a reply.

I notice that the java home directory (leading to tools.jar) has a windows 8.3 form. If at the point of the error Jython is going for a file in that path, it might be unable to cope with the 8.3 name as part of (say) a URL.

This is probably from an environment variable, but if not, it may be happening in the launcher. We've made several adjustments to jython.exe, so a later Jython may do better.

Or he cause may be entirely different.