Thanks for posting the link, that's one of the pages I've been referring to while trying to recover the source.
Maybe I'm a little bit lost, but I'm still having some trouble when following the top answer.
1. I use ArchiveViewer to extract the pyz file.
2. Using ArchiveViewer again, I extract the 'Convert' file from the pyz. Note that when extracted, it has no extension by default.
3. I haven't yet been able to decompile this as I receive messages akin to 'not a valid pyc pyo file'.Here's the extracted file
. As far as I can tell it is a pyc or pyo file, but I could be wrong?