Cannot read file - bad format

Use e.g. 7zip to extract the mszx file inside the mscz, then use some plain text editor like notepad++, locate the bogus line and see whether you can fix it.

Here's the fixed file.

I wonder if this is related to #274317: Editing instrument name containing & loses text after that since the "&" symbol is the culprit here also.

Edit: Inline doesn't seem to like the [ ] in the file name so I left it at the end of the post.