Problems in FS2002

Hello! I had to reinstall FS2002 because of some scenery issues. Now that I reinstalled it and only added a few add-ons, my 767PIC is crashing each time on climb out. The same thing happened with the PMDG until I lowered my traffic. The error is related to the atc.dll module and seems to cause problems when ATC won't shut-up. I have UT installed and my traffic is down to 25%. Above 25% makes it impossible to even get in to ATC for clearance or acknowledgement.Any ideas on how I can solve this without reducing my traffic to nothing? How does everyone run so much traffic on these sims when it obviously causes a myriad of problems (e.g., go-arounds, ATC talking nonstop)?Thanks,Chris