cannot be opened for writing.

Hello,
I tried searching, but it returns an error everytime, so if this has been posted before, I apologize.
I have just installed 2.43. I added my Music directory, and I started editing by album with the TAG SOURCES>Amazon option. However, I am now receiving the error: cannot be opened for writing.
The error is preceded by the the file directory and name. Why can I not edit any of my files? This is generated on every file.