I made a change to our theme.css file to get rid of repeating headers in table columns. I was able to upload that without issue and switch to the "new" theme. Then I was given some additional CSS from support to fix another issue, so I updated theme.css again, zipped the file & uploaded it. Now I am getting an error when attempting to upload a modified theme, "Error: Theme file unzip failed." I tried zipping it using both the built in Windows utility & 7Zip and get the same result.
I output recursive directory listings of both the successful & unsuccessful uploads and did a compare in Notepad++, and they were exactly the same aside from the date/time info & the file size on the theme.css file. I did a search in the logs on the server for the error message, but had no luck. I'm at a loss for what could be wrong.
Looking through the message board, I only found one other mention of this issue, and it somehow "automagically" fixed itself. Any help would be appreciated!