I'm using v 2.32 and there is no Mp3tagError.log in the data directory.
I'm working with aac files.
Open a directory, select a file. File has and displays in the edit area all tags except year. Edit year and save. Title tag is now empty....?!#?%
Now select menu Convert/Filename to tag. With correct format string (%artist% - %track% - %title%), execute. Year tag is now empty....?!#?%
This is a great program, usually -