Just wanted to chime in on the topic since I had just had a run in with Avira as well.
In my case, I was prompted by Avira of "Scanner.DashboardTab.dll" as being a trojan. A quick online search and it lead me to here; implemented the recommended exceptions but attempts to open the dashboard resulted in error (error send report prompt).
Solution: Finally in occurred to me to look in what Avira had quarantined, and sure enough, "C:\Program Files (x86)\StableBit\Scanner\UI\Scanner.DashboardTab.dll" was there -- restored, and dashboard launches normally.
