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Question? Have you tried running your programs on a windows VISTA computer? I believe this is my main problem. I use winvista32bit, and I know from researching this problem there are compatibility issues with VISTA. Thanks David Lee
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You're wasting your time trying to use anything but the supported operating systems:
http://www.altera.com/download/os-support/oss-index.html You can keep Vista installed if you want to, but you should install VirtualBox and then install a supported operating system.
I have a dozen or so VMs with versions of Quartus/Modelsim under Centos(RedHat)/WinXP/Win7 that I use when confirming scripts and tutorials work.
Cheers,
Dave