Hi Dimesio, Thank you for your help! I tried everything you suggested, but it still didn't work. However, I changed the name of the installer from "Installer V1.6.0 English.exe" into "test.exe". This solved the problem. I can now start K-Pacs. However, it immediately stop since I receive the error: "An error occured during program initialization. Please check, if your system complies with the system requirement (see readme.txt)" Any ideas/ suggestions? Thanks, Martijn