File xxx couldn't be open to write

Hello,

I have a problem with some of my new digitized files. All files are created in Audacity and saved as m4a file.

With some of these files I have the problem, that mp3tag could not open this files to write. I do a search here at the community and found some article about this problem, but no one matched my problem exactly.

The permission and access rights on the filesystem are correct, Also it is possible to playback the files from mp3tag or another application. All files are stored on a local harddrive. I make some screenshots where you can see an example file and my folder structure in windows.

Hope you have an idea what the problem is.

Thanks in advance,
Stephan


As new user I only could attach two files at once, so here are the other files.

mp3tag_05

Apparently M4A files are troublesome. See here:

and here:

and here:

Hello,

I think I've found where my problem is.
It seems to be an issue with the export as .m4a file from the program Audacitiy. All this files have the tag format "MP4" instead of "ID3v2". And sometimes the information in this files are broken. So I have decided to record these files again and spend not more time to solve this issue.

Thanks for your help,
Stephan

[I am little late, but...]

And here: