Recently I upgraded to Sonar 4 from Sonar 2.2 and I started getting an error when I launched Kontakt saying that Kontakt had been installed improperly and telling me to re-install Kontakt. The thing is I mistakenly deleted my version 1.5 installer that I dowloaded after upgrading. NI has not returned my emails. Has this happened to anybody else? I've downloaded lots of software and I usually back up my installers but for some reason this one got deleted. I really am in a crunch to have a working version of Kontakt. I suppose I could re-install the original version from CD but I did pay for the upgrade. Is there anybody out there who has any suggestions for how I should proceed?