If you guys are talking about the DYN wallet, that bug when starting the wallet it's been looked into right now
The way around it is to delete dncache.dat from your data directory
usually in C:\Users\*****\AppData\Roaming\Dynamic
then restart the wallet
if you see a progress to for example 94% then exit the wallet by pressing Ctrl-Q, this way it will save your progress
restart the wallet and you may need to exit again at 96% and 98%
after that will work as normal
I had to restart twice
sorry about that, the devs are looking into it as we speak