When you installed the SP, was the DBServer.exe process running in the background? You should valdiate that no VeSys Classic processes are running, before attempting to install the SP.
I intstalled from new the latest install. Teseted this and it worked fine.
Then with nothing running, installed SP08 and then nothing would work again, components, Harness comands etc all throw up errors?
I think you should create an Service Request on SupportNet to have someone look at this,