Quote: "Then the problems started happening.Some of the models I downloaded from the Store came up black"
We have had this issue as well. What we had to do to solve the problem is to remove the "effect" that was specified in the entity's FPE file. Once removed, it was normal.
If you have installed FPSC from your CD without any type of update, you will have issues. Most of the packs and models/media work with updated FPSC much better than in the original FPSC. Find an update that works for you and go from there.
Quote: "Build Process has exceed 1.85.Gb of virtual memory,USING 1877MB!PRESS CANCEL TO ABORT THIS BUILD!I have 3 damn rooms with like 8 guys"
Most people forget to check their setup.ini file to see what their settings are. Pay attention to the following:
lightmapatten=32
lightmapmaxsize=-1
lightmapboost=4
lightmaptexsize=256
lightmapquality=30
We run with the above settings and have never exceeded the cap. Mind you, we also run a lower version of FPSC (v1.17 to be exact). If I increase my "lightmaptexsize" to 512 or 1024, I will cap out. By learning and understanding the settings, you will be able to figure out what works best for your system.

Twitter: @NFoxMedia