I have the same problem, only happened tonight.
I have done:
(i) deleted cache folder
(ii) verify integrity of tool cache
(ii) uninstalled/reinstalled
No joy, so i then uninstalled it using IObit Uninstaller, which also removes any left over associated files. I then ran tweak power now and that removed any reg files or temp files associated to fm editor.
I then restarted and reinstalled fm editor but still nothing.
Please anyone able to advise