Fly Speed bug

Please be as detailed as possible (general things you might want to include in your post);
what are you trying to do exactly?
- Add a fly speed to the token
what the result was and/or what steps you took?
- I went into the token, tried to add a fly speed of 40, click it as it's main speed. I can't finish the changes and it gives me the error listed
Is the issue repeatable?
- Yes, I performed it several times.
what OS are you using?
- Windows 10 64-bit system
what rules system are you using?
- Pathfinder
what version of the software are you using?
- 3.7.3

The import also didn't give the accurate saves as well