I upgraded a workstation to Solidworks 2013 full version and came across an unusual error. All of the solidworks files aren't automatically opening the .slddrw files.

The 5 other installations i did  are working fine, now i have to manually click the solidworks program everytime i click a .slddrw file.

I uninstalled the program completely and redid it and same thing, not sure if its just an issue with this PC but due to our servers permissions i can't check the box to automatically open with XXXXX program, its greyed out.

Any idea why this is happening, or any solution to the problem?