Possible Virus Detected

Please report the issue to your firewall provider. That's a rather significant error on their part on a file which is 100% clean, triple-checked for viruses, enclosed in an installer with built-in integrity checks, digitally signed to ensure integrity and has been out for 3 months without any issues. I'd wager their using TrendMicro's Housecall for virus scanning (a free product which isn't actually meant for anything real, and certainly not meant for a commercial product) that suddenly started alerting on the file in the last couple days (see virus scan results). As Trend Micro frequently has major false-positive issues, this isn't entirely unusual in their free product.