It is being reported by many users of Mastercook, that AVAST is deleting required dll’s and deleting cookbooks. One person called AVAST and was told it would take $169 to investigate. Other MC uses have reported that they have also called AVAST and AVAST denies it is their problem. This is a new problem that users had not encountered in the past. This has just happened in the last few days.
I have not run into the problem since I am using the free version and have not done a scan.
You can report a possible FP here: http://www.avast.com/contact-form.php
you may add a link to this topic in case they reply
you can also use mail
send to virus@avast.com in a password protected zip file
mail subject: false positive
zip password: infected
or you can send files from avast chest
how to use the chest. http://www.avast.com/faq.php?article=AVKB21