I have the same problem. I have tried a number of things but still the same issue. I have a 330 180gb. As you mention it would be nice if the program could at least hint what could be wrong.
I have solved the migration using Paragon migration program. Worked the first time!
Cost me some money (20USD) but worth it.
I have a Sony Vaio VPCCW2S1E.
Good luck with your migration. SSD is a noticable improvment.