Shader issues

Hi,

I am new here and just a simpilot. Well,  I think the probem occured  after I had bought an add-on: Ground Service X. A little later I received a message from Couatl offering an uppdate that I accepted. After a while FSX began to stutter and finally freezed. When I checked the .cfg file I discovered 2 new lines: SHADER_CACHE_PRIMED_10=1693500672, And once more the same but without the number 10. I have found a folder called SHADER 10 in "user\ appdate\ local\ MS\FSX". I have read earlier that these files can cause serious problems so I deleted it, and voilà! everything went back to normal. Only thing is that it is written back into the .cfg file. I wonder now if it is ok just to delete this folder  without causing other problems??

Regards

Gunbjo