False reports from Avast
If your Avast-AVG powered antivirus reports Smart Launcher as malware, don't worry it's a false positive.
We contacted Avast and tried to solve the issue with them.
Although they recognized the issue, it seems they are unable (or do not care) to permanently solve it. Once in a while, Avast marks a new SL update as malware. People report the issue to us, we contact Avast and Avast manually cleans the error. We requested a better solution but Avast didn't provide it yet.
We are a small indie team and for us, nothing is as offensive as marking our hard work as "malware".
At the moment we are studying a solution (legal and/or technical).