audit Trial and error 2427

[chthomas]

I downloaded the "audit Trial of record changes" sample by Ghudson. I tried the code in my form. When i do any edit/update am getting an error "2427- You entered an expression that has no value".when i remove an option group in the form the error disappears. Spent hours trying to figure out the error. No success. Can someone please guide me where am i going wrong? I tried the same code in other db's and they are all working fine. Its really Excellent. Am ataching the db alongwith.

Regards,

charley