Yeah that's what I did, then updated to the latest nightly (feb 9) and all was well. At first a bunch of stuff crashed but then I rebooted and reflashed the gapps package and wiped cache and dalvik cache then it all worked wellwhich nightly did you install? I had that issue with the 2/5/16 nightly, I believe. The 2/3/16 ran kind of OK for me with periodic network drops. I fixed mine by booting into recovery and then flashing the 2/3/16 nightly again.
Also, I'm going to assume that you're on T-Mobile, from your signature. I'm also on T-Mobile trying to run CM. I hope that the weird error isn't specific to T-Mobile users and isn't a sign of T-Mobile no longer being a supported carrier with this ROM