Please upgrade to 2.3 here.
The 2.2 and earlier branches are no longer being updated.
Bug Fix for XLXS and DOCX
This discussion is related to the FileUpload
I ran into a problem not being able to upload xlxs and docx files. The garden_Media.Type column is limited to 64 characters and php for these files was returning something like:
Which is 65 characters.
The fix is to change the column type to 128 characters and change line 520 in class.fileupload.plugin.php from: