To resolve this error, try the following fixes:
If you want the actual best fix: stop using the Steam version. The community-developed launcher rewrites the memory management of Black Ops 2 entirely. To resolve this error, try the following fixes:
: Rewind the story to the mission where you must choose between Harper and Farid. Choosing to shoot Harper removes him from the following LA mission, which has successfully prevented the "state pool" error for many users. 3. Essential File & System Repairs To resolve this error