if (nanoCatalystPoints < 0)
{
nanoCatalystPoints *= -1;
}

Does it take weeks? Adam, could you please suggest these outstanding 4 lines (could be just 2 actually) of code to the dev team? Hoping they wouldn't debate 10 days on it of course...

You know what? I've done trying & resolved to using a trainer to add nano catalysts that has disappeared. Every time I restart the game, it show 000 again.
For people who can't stand it anymore, just use a trainer. I recommend dR.oLLe's v1.1 +9 trainer.
Finally, I can play the game in peace without breaking a pencil!!!
Thanks to Crytek for a great game with bugs which they are/aren't to be blame! I will sit on the fence for this case. You guys decide...

FYI I'm also having the same issue after Patch 1.2 auto installed (verified afterwards). Collected 400 NC on the easiest setting after completing the Post-Human War difficulty and still have zero NC. Not cool, stopped playing SP altogether. Patience is wearing thin on an MP bug or two as well, but those are for another topic.

Are you kidding??! This is a FIX??! So if I read this right...I have to either delete my current profile and all saved games, or continue to play waiting for some arbitrary amount of negative NC points to get back to 000! How is this passed as a FIX for what is clearly a problem that should have been detected before the game was even released. Not that any of you at Crytek will care, but after waiting over a week for a patch that fixed almost nothing, I returned my retail Crysis 2. Maybe I'll repurchase in 6 months when the game is fixed & worth how it plays....$19.99!

SSSSSSOOOOOOoo disapointed. Like in the last level i collected 25000 nanocatalyst and i want to modify.... and nothing!
of course crytek realeased a non-effective patch...

I am waiting for CRYTEK to somehow blame all this on PC piracy...and just move on again.

I have installed the 1.2 patch, created a new profile and the bug is definitely not fixed. I've lost over 8000 at one time and over 3000 another time. Sometimes it happens (resets to 0) during the next load and sometimes it happens when the game is closed and then started up again. I've also seen it where I would kill multiple aliens, pick up the nano points and it not registering in the game (staying at 0). Every time the game loads or I close the game, I'm holding my breath wondering if I am going to have the same points I had before. Not cool at all. Dunno why Crysis can't fix this. Wouldn't think it would be that hard to do.

If a fix requires the players to take action in order to solve a problem within the game, then you're doing bugfixing wrong. I am not happy about having to win back over ten thousand nano catalyst just to restore the gameplay to original functionality. Very unprofessional.