1.5 will only install as VSTi, does not find any .nki files, does not find any .wav files and does not see external firewire drives.
I completely removed any trace of former installs as recommended on the NI forum.
Everything else is working fine; Logic, Samplitude, Melodyne, Gigastudio.
For what it is worth, here are the specs:
Asus P4B, P4 1.8, 1.5 gig RAM, 2 internal IBM drives, 2 Firewire Maxtor drives, RME Digiface.
About contacting NI, have you tried contacting them?
Jeannot, that is a little bizzare. I have about the same setup as you and 1.5 is working fine over here. Have u gotten a link that will let u DL 1.5 again(maybe something got corrupted on the DL?). Maybe its Samptitude or Logic? Ive heard there are some problems with logic and 1.5. I`m on SX. Rich