Disappearing disciplines

I want to start out saying how much I'm enjoying playing TFN. Big thanks to all of you who've helped make this mod (or whatever you prefer to call it).  

Now, I'm having some trouble with disciplines disappearing. It happens like this: I'm playing as a Follower of Set. I've leveled my Obfuscate up to lvl 5, and when I activate it the Serpentis skill disappear from my character sheet. Is there anything I can do to get it back? Any commands I can type into the console or anything?

That's intentional. You can't use Obfuscate and Serpentis at the same time. You can only have one of the two active. That's why Obfuscate will temporarily disable Serpentis and Serpentis will disable Obfuscate.

When I was beta testing TFN, whenever I tried to use both disciplines at the same time, the game would crash. I believe zer0 couldn't find out what was happening so he made so they would be exclusive.

So it should come back, once the Obfuscate timer is done?

Yes, it should.

Actually, the game throws a message on the upper left screen, every time you use Obfuscate, which says 'Effect gained: Serpentis Max 0', and viceversa.

That is how it should be.

You can however use non-offensive Serpentis disciplines while Obfuscated. For instance, you can Obfuscate then use Serpentis 1 on people.