Detecting ipad or iphone requires a hardware. Maybe that hardware is spoilt.
try looking at this: https://discussions.apple.com/thread/2415930?start=0&tstart=0
Found that strange. It runs fast when installing Adobe Master Collection was a breeze, about 30 minutes, the maximum.
This might be a cause of the space in your computer, how much space is left after installing Adobe Master Collection?
It might be of this issue: http://social.msdn.microsoft.com/Forums/en-GB/toolsforwinapps/thread/38847ac8-e387-4af6-8411-c9c95c27e67f
from this thread windows 8 blend 4 crashing