Virus chest server not running, rpc communication failed

I searched over and over but couldn’t find a solution in these forums.

I just installed avast today, after removing my old antivirus programs(webroot spysweeper and trend micro antivirus) by going into the control panel and then into add/remove programs, and then removing them.

Avast has already found some viruses, and when I try to move them into the chest I get an error box saying Virus chest server not running, rpc communication failed.

While trying to find a solution on this site, I saw that this probably meant there were still remnants of my old av programs on my computer, but I don’t know what else to do to remove them.

I also tried selecting avast in the add/remove window and repairing it, but that didn’t change anything.

What else should I do?

Yeah… some remains…
Use the specialized tools:
http://esupport.trendmicro.com/2/How-do-I-uninstall-Trend-Micro-AntiVirus-2007.aspx
Maybe http://forums.mcafeehelp.com/showthread.php?t=223458 has some info about webroot spysweeper removal.