Additional note: I have at least one .wav file which displays the same "cannot be opened for writing" error when I try to get Mp3tag to Remove tag from it.
It is 44MB in size, I cannot attach it because unlike others, as soon as I cut the file down to a few seconds, the problem cannot be replicated in Mp3tag any more.
It can only be replicated on the original 44MB .wav file. I can upload it elsewhere if you'd like, if it's necessary?
Removing the tag then executing the command would work for other files but with this file, it displays the same error for Removing the tag as well as trying to execute a tag command.
So for that one, I am forced to use the other program to remove the tag from it before it can be used in Mp3tag.
Since another program can remove the tag from it, perhaps Mp3tag could be made to as well.