I've begun to notice error messages on any of the media listing pages (in the library and in the "insert image into post" screens). This is a recent occurrence (within the last week or so) and seems to fit withing the timeframe of the latest upgrade of the Scissors plugin. I've tried rolling back to previous versions of Scissors, but have been getting the same errors.
I did some sorting through the code, which led me to finding that the data in the postmeta table is incomplete for any of the records providing the errors. The "sizes" array in the serialized data is missing (I inherited the site, and it appears that no thumbnails were created in the timeframe before I took over).
I'm not sure at this point if the best bet is to recreate all of the serialized data (which, because we're running MU, would be very time consuming), rewrite the lines of code throwing the errors (which would just ignore the problem instead of fixing it), or if there is another avenue that I haven't discovered yet.
Any ideas would be greatly appreciated.