I have installed on my system, in the same Windows 98SE partition, both the full version of Kontakt 1.1.1 (standalone and VST version) and Gigastudio 2.2. The two programs coexist without any problems (so far), but I can\'t use the standalone version of Kontakt simultaneously with Gigastudio. The programs will both launch without crashing the computer, but the first program launched will grab the audio card (on my system an Aardvark Q10), leaving the second program high and dry. However, I can use Kontakt as a VSTi within Cubase VST 5.1r1 while also running Gigastudio. This arrangement seems to work fine, although I have not pushed it to the max and can\'t say what might happen with a high track count or large numbers of effects.