Both of the below users tried to upload their organization's 990 to their profile and it wouldn't upload. Please see their comments below:
Attempting to upload our form 990-EZ from 2016 to our profile - it is in PDF format and only 394KB in size. I enter the document name, year, and navigate to the file, then hit Save... a few seconds passes... and I'm back on the Documents area of our profile with NOTHING changed or saved.
I've tried 5 times. No error message, no indication that something went wrong. But the file is just not showing up. Using Chrome 58.0 and OSX El Capitan 10.11.6 and also tried Firefox 46.0
I think, however, my files are small enough – as I stated in my original post. They are 281 KB and 1,119 KB – which are 0.281 MB and 1.119 MB respectively. I have tried to repeatedly upload these files and they just won’t “take”.