I've managed to install it now on my Windows 7 partition - I had to change installation path. The XP 32 bit partition which also has trilian installed doesn't work now however, I get the same error message as above.
I have problems installing Trilian, I get this error message when I open the plug-in (64-bit) in Sonar 8.3.1 64 bit (Win7 64 bit):
"Cannot open Multi D:\Other LIbraries\Spectrasonics\STEAM\STEAM\\Defaults/default.mlt_trl"
I installed Omnisphere with no problems however.
Maybe someone has an idea on what this could be?
Interesting, I am getting that sometimes with Omnisphere on Win XP running Cubase SX3.1.1
I hadn't posted the problem yet as I am still trying to authorize and thought maybe that had something to do with it as I am still running in demo mode.