I started playing around with Wrappers today and hit a snag. I was trying to make a few variations and after the second Wrapper things stopped working properly.
If I make a new one then it just replaces the 3rd one, regardless of how many times I try it. If I go into edit the Wrappers the information for anything past the 2nd option is blank. I am unable to delete any of the Wrappers. I'm assuming that it saying Array in the ID for the 4th one is incorrect.
Hmm, looks like the styles/wrappers.php file is a bit messed up. Will need to track down the cause. For now you'll need to manually fix up the file. If you can post the contents here, then I can show you the changes that need to be made.
I looked at the file and figured out what needed to be removed. As soon as I manually deleted the last 2 entries then I could add another one with no problem. When I added the 4th one it created the same problem again though.