Even with a perfect bo2offlinespmpzmclientv37z install, issues arise. Here are the top 5 fixes:
| Error Code | Message | Solution |
| :--- | :--- | :--- |
| 0xc0000142 | "Application was unable to start correctly" | Reinstall the Visual C++ Redistributables. Run the game from an exclusion folder. |
| Missing zone\...\common.ff | "Fastfile is out of date or corrupt" | You did not copy the zone folder from the client. Re-extract and overwrite the zone folder specifically. |
| Black screen on launch | Game loads sound but no video | Go to %userprofile%\Documents\My Games\BlackOpsII\players\ and delete config_mp.cfg. Launch the game again. |
| Bots don't move | Bots just spin in spawn | This is fixed in v37z. If it persists, disable "Specialist" strike packages in the game rules. |
| DirectX Error | "Unsupported D3D system call" | Force the game to run in Windowed mode. Edit config_mp.cfg and change seta r_fullscreen "1" to "0". |
The modding gods are unforgiving. Follow this checklist: bo2offlinespmpzmclientv37z install
The Golden Rule: Do not install this over a Steam version you care about. Copy your Black Ops 2 folder to C:\BO2Modded\ first.
Legality: This client does not include copyrighted game assets (the maps, sounds, scripts). You must own the game. The client merely patches the execution flow. However, using it online (against official servers) can lead to a Steam ban. Keep it strictly offline or on a dedicated LAN. The modding gods are unforgiving
Security: The v37z version has been scanned by thousands of users. However, because it injects code into a process, 5-10 antivirus engines will flag it. Always:
Once installed, v37z unlocks everything from the start. The Golden Rule: Do not install this over
Because bo2offlinespmpzmclientv37z modifies how the game reads memory (to enable offline progression and bots), many antivirus programs flag it as "Win32/Trex" or "Hacktool".