Originally Posted by venky716
Yes it's a known problem, check their google+ page.
1.Flash the previous nightly then flash the latest on top.
2. This may sound weird but many reported that it worked, tap the four corners of the language selection page clockwise starting from top left.
am sorry but the fix is in works
what i did was
flashed stock cm nightly(any of the available cm11)
flashed cyanfox on top of it without wiping