charles kasler : "X-1...i'm the only user - do i need to do more to run as administrator? Right click every time I open it? Thanks for the reply. Install seemed to be OK. "
I'm not sure as to why, but the normal recommendation is to "run Sonar as administrator" which you can do by either right-clicking or by changing the properties of the exectuable or shortcut to always do it.
Is TTS-1 present in the ..\Cakewalk\Shared Components\Shared DXi\TTS-1 folder ?
Are you missing any other synths/instruments/plugins ?
Have you patched your X1 with the X1d patch ?