This issue has been consolidated into this topic:
Today morning I would start PortableApps, but McAfee VirusScan reported virus alert at the PortableAppsPlatform.exe.
McAffee deleted the file.
McAffee DAT-Version: 5917.0000
Afer loading the new installation package from portableapps.com and reinstallation, I got the same problem after the installtion process.
After switching of the heuristic sensitivity of the access scan I got no more virus alert. It is an false positive message from VirusScan, I think.