The current version of RockPackIII has a known error in the PLANE failure calculations when metric units are used. You can download a patch that provides a special program with a fix by clicking on the link below.
RockPackIII Plane2Beta Patch: DOWNLOAD
If you have purchased a license and are ready to activate it, you’ll need to right-click on the program shortcut and choose Run As Administrator. Enter the registration number you were issued into the Serial Number prompt and click OK. The program should record the license information and start. Future launching of the program should not require the Run As Administrator elevation.