A critical hotfix for January Update is now out, addressing some of the misfires with the update:

• MP: Unresponsive zombie clients now get disconnected properly.
• Having the example vehicle mod enabled will no longer cause the game to crash at launch.
• Installing the "None" front bumper on Nexus will no longer cause the game to crash.
• Fixed a number of visual glitches related to customization parts.
• Decreased strength of most front and rear bumbers.
• Increased mechanical damage on normal damage setting.
• Added track info for Tarmac 3 Short Route Reverse.
• Career: Demolition Derby series are now shorter and single heat only.
• bgeometry.exe and bimage.exe are now included in the tools folder.

KNOWN ISSUES:

[*]MP: Spectating will occassionally crash the game, please avoid until a fix is out.