Gdday.
Could you share your debug.log with us, could be helpful. located at > C:\Users\yourusername\AppData\Roaming\Biblepay
in search box type: %apddata% then there you should see biblepay folder with debug log etc etc...
Other then that what i can think of is if you run from cmd :
cd "\Program Files\Biblepay" biblepay-qt.exe -erasechain=1
from you biblepay folder C:\Program Files\Biblepay perhaps it can remove the problem.