If the Ad-Aware antivirus scanner runs realtime in the background, then YES, it would conflict with your AVG.
Hope this helps.
Even though I've been following Cnet for years I still consider myself a newbie. The newest release (8.1) for Ad-aware plus has options in settings for an Anti virus engine. One is for "Scan" the other is for "Live Protection". I chose scan but didn't select the live protection option. Am I correct in assuming that the Live Protection option would not be compatible with AVG Anti Virus pgm. & that scan would not?