FRC_userClassFactory

Hi,
What is the FRC_userClassFactory? When I loaded code onto the robot, it complained about this error:


* Loading StartupDLLs: FRC_UserProgram
Warning: module 0xe7bb90 (FRC_UserProgram.out) holds references to undefined symbol _GLOBAL__D__Z20FRC_userClassFactoryv.
Warning: module 0xe7bb90 (FRC_UserProgram.out) holds references to undefined symbol _GLOBAL__D__Z20FRC_userClassFactoryv.
(unloading partially loaded module FRC_UserProgram.out)
...FRC_UserProgram.out failed to load.

Is this part of WPILib?

Thanks!

-Masoug