I'm getting this error when I try to downgrade a 1231 from LWAPP to Autonomous mode. The transfer takes place and then it starts extracting file and ends with this message.Any ideas?

I recently did a conversion of 125 AP's, both 1231's, 1121's and 1242's this past month. The problem is I have about 10 that didn't get joined to the controller. It seems like a SSC issue but i'm not sure because I see the ssc on the controller. I tr...