Matrix Version: 5.5
A backend user was trying to regenerate the CSS File Folder after making updates to one of the CSS files it collates. The user has full Admin permissions for the folder and all the associated files.
(We do have “Auto regenerate” turned on, but do not rely on it.)
It failed to regenerate, and showed an error message:
(Yellow Box) Matrix Warning: “core_css.min.css”'s MIME type does not match its extension.
(Green Box) Matrix Notice: Error occurred when setting the file content.
The file that it says “MIME type does not match its extension” is the CSS File Folder.
Matrix saves it as a .min.css although we do not use the inbuilt minification (we Merge Without Minification).
We have a mixture of CSS Files and CSS Design Files that go into this File Folder. None have any HTML structures - just pure CSS and CSS comments.
When I - a System Administrator account - regenerate the file, it does not show any warning. But it continues to show one for the Backend User.
Any idea what could be causing this? Have you seen it before?