Tried several times to upload my Prussia’s Glory II Module around 01:20 13 June. Keep getting the APIError 400: Bad Request.
I logged out and back in a few times. Tried uploading from both Edge and Firefox.
How far did the upload progress? Did you get an error immediately?
Where can I get a copy of the module so I can examine it?
Solved it while watching baseball!
It was the apostrophe.
Thanks for the response, though.
I suspected the apostrophe was the problem, but hadn’t gotten as far as proving it.
As much as I dislike apostrophes in filenames, it ought to work and I’m going to run down why it doesn’t.
It is likely not a normal ' but some other glyph. MacOS has a tendency to replace ASCII characters with glyphs 
Yours,
Christian
Note that we already had an issue in the tracker for this. Frontend should reject bad filenames · Issue #55 · vassalengine/game-library · GitHub