TrueType Auto hinting issue

When TrueType auto hinting on export the copyright symbol gets corrupted. bold_ttf. The CFF version looks OK. bold_cff. Also if I view the auto hinted font in VTT many errors are reported, such as

Warning: Inst: LOOPCALL Value for count is less than 1. Function will not be called.
At ByteOffset: 92 Of function: 20
Glyph ID 80
Warning: Inst: LOOPCALL Value for count is less than 1. Function will not be called.
At ByteOffset: 5 Of function: 48
!!! - Error or Warning Limit Reached

Not sure if these two are related.

Thanks