Number one: Don't panic! Kartridge is published by Kongregate and does not include any malicious software. Our software does not contain any harmful or damaging content! There are some steps you can take to resolve this alert message.
First off, make sure that you update Avast!, as early versions of the application may be running based off outdated databases.
Secondly, you can disable Avast! while you install Kartridge. This is a temporary fix and not one you should take if you are worried about operating online without protection.
Thirdly, you can follow the steps in this article to create an exclusion for Kartridge!
Our development team is working on resolving this issue in partnership with Avast!
If you have any further questions, please contact firstname.lastname@example.org!