Common Sync Problems
An occasional problem when updating your wallet from an old version is that it gets stuck on a block during sync and will not get past it. To fix it, make sure you are using the latest Ritocoin release. Make sure the wallet is not running. Now start it this way:
In Windows, open a cmd prompt. (Start menu, Run, "cmd"). Do cd \"Program Files"\Rito and then press enter. Now do rito-qt.exe -reindex and press enter. That will cause your wallet to reindex from the beginning and should resolve your problem.