Conflict CIS and Corel Video Studio


I already searched for this problem but I only found a French discussion in the International forum but cannot read :a0

My problem is that after installation of CIS the menu of Corel Video Studio is automatically switched from German to English. It doesn’t matter if I install Corel at first or CIS. After CIS installation I have an English menu in Corel. Even I uninstall CIS the Corel menu is still in English until I re-install Corel.

I have tested with a brand-new installation of Windows 7 and Windows 8.1. Each combination of Corel Video Sudio Ultimate 6, Ultimate 7, Ultimate 8 together with CIS 6, 7 or 8 shows this effect.

Can anybody help me to get the Corel menu in German in combination with CIS?