I tried every suggestion I could find in numerous forums with no success and stumbled on a fix by myself that worked for me. I d'loaded a trial version of ACDC 5 at www.oldversion.com and installed it. I then copied the IDE_ACDStd.apl file (v18.104.22.168, 1024 kb)into my C:\Program Files\ACD Systems\PicaView\Plugins folder, rebooted the pc and all is well again.
I then remvoed ACDC 5 thru Add/Remove Programs in Control Panel. Hope this helps someone who is plagued with finding a fix like I was.
Home Edition Media Center
SP3 and all Win updates
Intel Pentium Dual Core D 820 2800 MHz
512 MB RAM
NVIDIA GeForce 6200SE