Possible False Positive on Portableapps Pre-Release Platform

I just tried to install the new pre-release 4.1 of the v2 Portableapps platform (from www.portableapps.com through SourceForge) on a thumb drive, and NIS 2012 identified the launch file "portableappsplatform.exe" as "WS.Trojan.H", removed it, and quarantined it.  I suspect this is a false positive.  Anyone else seeing this?

 

-- Jim