Suburban bad oil leak

Just finished changing the oil in my 1990 Suburban. The filter was stuck and had to be wrestled off. I eventually had to cut the filter off and unscrew the base with needlenose pliers in the holes around the threaded part. Anyway, I put the new filter on, added oil, and started her up to check for leaks. Oil was practically pouring out of the filter area. Upon further inspection with a flashlight, the oil is leaking from above the filter - oil filter adapter? Only leaks when running, and before this, never leaked even a drop of oil. Any ideas?

You twisted or distorted the adapter in some way, take it off look at the gasket and adapter closely.

i agree check to make sure that the old gasket of filter did'nt stick to the housing

Thanks for the reply. Is taking the adapter off pretty simple? I'm guessing I take the filter off first and then unbolt the adapter?

Correct.