What Did I do Wrong

[metal_head]

Well,I made a map than converted it to bsp format and set it as the first level of my game by editing the menu.ini file.I didn't touch the 3dt file for a couple of time and now when i try to open it it says:

GeditPro checks for valid header directories when opening new worlds.

The path to this *.3dt file's specified Headers does not exist on this system.

Choose [OK] if you want GEditPro to set the headers path to:
D:/RF/tools

Choose [cancel] if you want the headers to stay in I:/source

I didn't touch anything and it throws me out when I click OK or cancel

!PLEASE HELP!