Cannot delete Classic Theme
FMPA(A) 13 / 14
Operating system version
Mac OS X
Description of the issue
It is impossible to delete the Classic Theme from a file created in FileMaker 12 or earlier, even efter making sure that it is not used on any layout.
I haven't been able to find this in the documentation - I suspect this is done by design, but it would be nice to have this confirmed/explained, and if it's not officially documented, it should be.
Steps to reproduce the problem
Create an empty file using FMP12.
Change the layout theme to Classic.
Open the file in FMP13 or FMP14 and change the layout theme to some theme other than Classic.
Go to Manage Themes and select [Classic] - unlike with other unused themes, the Delete button remains inactive.
A clean file with only the theme information needed.
A dirty file with legacy theme information.
Exact text of any error message(s) that appear
Recreate the entire file from scratch in FileMaker 13/14.