My son took 152 at a local college this summer and can't register for 251 until TAMU has processed the transferred grade. His advisor has confirmed that TAMU has received it, it just hasn't been processed. Anyone have experience with how long this process takes? He says the advisor will"force" him into a class that's already full once the semester has started.

He can call Admissions Monday morning at 979-845-1060 and let them know the hold is preventing him from registering.

Occam's Razor says talk to the prof.