Today I installed avast! 4.xHome/Pro on my laptop with no problem. Then, an attempt was made to do the same installation on my dexsktop computer. And, I received the following message: "Subsystem detected a PRC Error". I tried to go to the reference page in Avast, where I was directed to go, and my computer could not find the reference page. I repeated this attempt several times with no success. What do I do next.
arnie