The Wilcom 9 is a fairly old program. This was initially designed to run on Windows 2000 or Windows XP. However, there are plenty on videos on YouTube that users install on Windows 7. You can try doing this by yourself. Regarding this problem, it's advised to install and run it using compatibility features. To do this, go to Start and type Run program. From there you should open the Run programs made for the previous Windows version utility.
Make sure that you choose to install the application and run it in compatibility mode with Windows XP SP3. You should be able to install and run the program without any compatibility errors.
How To Install Wilcom 2006 Sp4 R2 On Windows 7
In Multikey folder execute 'install.cmd'. You should get a message in dos window: ' Driver Installed Sucessfully', then check it by go to Device manager - If System Devices there was yellow exclamation mark - Windows cannot verify the digital signature (Code 52). Disable driver signature enforcement by press F8 and choose 'disable driver signature enforcement'. After that yellow exclamation mark disappeared.
Restart you PC. DON'T updated automatically from the Internet, turn off Internet and make sure you don`t update drivers, (just skip it).