Hi folks,I am getting the following error message everytime I start FS2004: "SimTracker Error: Unable to Initialize MC3 Library." The error msg pops up at the startup screen. I click it off and the sim seems to load without error. Any ideas what it is? I tried to reload the sim once but the error msg still pops up.Is this a mission control library of some type? I did notice that the sim does not accept and set a check box for "setting this as default flight" and start with that flight when I startup the sim. Anyone know what that error is and how to fix it?I am running Windows 2000 pro, NTFS, with an AMD XP1700+, ASUS A7N8X Deluxe MB, 512mb PC2100 ram, TI 4600 w/128mb graphics card. I am getting excellent frame rates of 35fps w/AA off and 24 with AA on. all the sliders are pretty much maxed out except for the frame rates which I set after analyzing the sim work under heavy cloud conditions.Sim addons: FSMeteo 6.3, FSNAV FOR 2004, Cloud fix/2, and FSUIPC 3.x. Retired AF, used to work on flight simulators and trainers.

Try uninstalling all of your add-ons and see if the problem goes away. If it does, try installing your add-ons one by one.