Ufff, tried now really long to help in TeamViewer and it finally works.

Problems in Windows 7:
- ALWAYS right-click on the Programs and start as Administator -> otherwise you cant save anything OR IT IS SAVING, BUT THERE IS ONE SAVED VERSION FOR EACH USER

Normal Problems:
- ALWAYS work with a CLEAN CoD2-Copy! No Missing-Functions and Shit this way
- When made a "CoD2 Modding"-Copy, REMEMBER to enter the new Path of it in CoD2-Compile-Tool, or you are compiling some old map in the Gaming-Copy flooded with mods.