The plugin *was* by wott, now it's possibly a collaboration, still hasn't really been worked out.
I'll need to update that statement for version 2. :)
Glad that the new version solved the column issue, I'd like to mark this thread as resolved and start a new one for your caption issue.
I have not touched the captions functionality in my development from 1.5.4 to version 2. It is on my list to address as I have time. Please start a new topic for captions, describe the problem in as much detail as you can (I don't use captions nor am I familiar with the WP gallery).
If you have an example URL of something you want it to do and perhaps another of what its currently doing, it might help me gauge if its something I'll have time to address, or if it'll be a larger undertaking.