system
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I´m having the same problem. 
I´ve just got an application in vb.net that prints reports for more than one year. Ad my client has just called me because the program was stopped and couldn´t print. I´ve just have a look at it and Avast has deleted the printer library dll I developed some weeks ago. Every time I try to copy it to the application folder Avast has marked it as Win32:evo_gen and I´ve just included it as “False positive file” but Avast continues deleting it.
I think as VBWriter2, this is a very big problem for us. I always recommend Avast as the best antivirus but this is very, very annoying.
What can we do with this problem? do I have to send you all my vb.net applications so you add them as false positive??? This is crazy.
Regards.
SOLVED: I´ve just solved it by adding manually the folder in “Options → Active Protection → Shield → Exclusions” (sorry for he english, my avast is in spanish and I try to translate it for anyone) 