Excuse me, but two times this week I've seen this:


Assertion failed!

Program U:\PayCon-qt-win-thor\PayCon-qt.exe
File: src\kernel.cpp, Line 429

Expression: pindex->pprev||pindex->GetBlockHash()==(!fTestNethashGenesisBlock:hashGenesisBlockTestNet)


The last time I re-downloaded the block chain which fixed the problem, but it took forever.  This time I'm just going to bootstrap it, unless somebody knows a simpler solution to my problem.  Is there anyway I could rescan the blockchain just from a certain block?
Thanks for any feedback.