I recently purchased Lightroom 4 and tried to edit in Elements 10. I got the same error message that has become popular on many forums. Has Adobe come up with a fix for this yet? If not, what is the timeframe for the fix? I purchased Lightroom 4 with the intent of editing in Elements so this is very frustrating. Also, what is RC2 that I have seen referred to on many posts? Thanks for your help.