SF6 installation problem

Trying to install SF 6 demo and after requesting confirmation on eula and installation directory it errors with the message 'The Installation has been prematurely ended'. Can anyone point me in the right direction on this problem.

SF5 runs like a dream but would like to try out 6

Running WinXP
Athlon 1.4
512mb ram
60gb hd
logged in with admin rights
 
very strange i´ve downloaded the v.6 too and installation was fine, have you tried to download again the software?
 
Thanks for the input - I downloaded the demo again and got the same error - The Installation Wizard has been prematurely ended. Extracted the *.CAB files and ran the Sound 6 program which fired up fine but of course as nothing was entered in the registry there were no plugins etc.
I think I must have something blocking the install on my system somewhere even though SF5 installed perfectly. I will keep looking and post back if (when) I find the answer
 
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