I've got a Samsung Galaxy Nexus from Verizon (CDMA) and my devices is rooted. I was running the Bugless Beast JB 4.1 ROM up until yesterday, when I decided to make the jump to CyanogenMod 10.1 and flashed the JB 4.2 update.
There were some issues that I had to figure out, namely that I had to download and flash GApps, but once I did that, things seemed to be going better, but I kept getting all these error messages like YouTube, Play Music, Google Books, etc, kept having errors and crashing and force closing, and I also had 2 Calendars. After doing some research, I found a solution that worked for me; I disabled the older Calendar first of all and only used the one that I downloaded with the latest GApps package, and then I uninstalled YouTube and all the Google Apps that were crashing and giving me problems. Then I went in to Google Play and re-downloaded them. Viola! They all now work perfectly, with no more crashes or error messages!
Now since this is the first time I'm actually using a CyanogenMod, I see they have a feature where you can download updates directly from the device OTA. VERY cool! Especially when you are running a nightly build and might want to move over a a newer build.
My questions are these, how do I go about downloading and installing the new updates via this method, and will flashing the new nightly build update wipe the device and it's basically like flashing a new ROM all over again and I'll have to go through all my setup and personalization and customizations again (ie. setting up my homescreens, folders, widgets, etc.)?--
"I do not feel obliged to believe that the same God who has endowed us with sense, reason, and intellect has intended us to forgo their use." - Galileo