Hi all
Last problem resolved. I've now got a working application running under ocempgui - yay. And it is, as I hoped, much quicker than the previous version of the app which used pgu.
Something appears to be the problem, however, with my use of py2exe to convert the python program to a Windows .exe.  Specifically, the resulting .exe fails with:
IOError: [Errno 2] No such file or directory: [path]\\library.zip\\ocempgui\\widgets\\default.rc'
Anyone got knowledge about use of py2exe with ocempgui and can suggest a fix?
Many thanks