If a player tried to use a trainer designed for the launch version (v1.0) on a patched game (v1.4), the trainer would likely fail to work or, worse, cause the game to crash. The v1.4 Trainer was specifically coded to find the memory offsets used by the final official patch of NFS Carbon. This made it the "definitive" tool for players playing the game on modern systems, as most digital distribution platforms (like Steam or Origin) automatically deliver the latest patched version.

: Enables the car to pass through traffic and obstacles. Economy and Progression :

This happens if your antivirus runs a background scan and quarantines the file mid-game. Double-check your active protection settings.

+13 Cheat-Trainer Need for Speed - Carbon By Andrei [v1[.]4][.]EXE

Because trainers inject code into running processes, Windows Defender or third-party antivirus suites will often flag them as a "False Positive" (Malware/Trojan). You may need to add the trainer to your antivirus exception list.