Webroot Secure Anywhere scan
6/11/2016
Malware Group:
w32.Adware.Adknowledge
Automated Cleanup Engine
Starting Cleanup at 11/06/2016 - 15:16:03 GMT
Starting Routine> Removing e:\portableapps\portableapps.cominstaller\app\nsis\stubs\zlib-x86-unicode...#
Deleting File> e:\portableapps\portableapps.cominstaller\app\nsis\stubs\zlib-x86-unicode
False Positive: https://portableapps.com/support#false_positive
Virus Total Scan: https://virustotal.com/en/file/e17ebd54ea1fcdb5ffb439755f649176d5c3f157a...
(Note that you can always ignore "Rising" in the results as it is basically useless)
You'll need to report it to Webroot and hope they fix their issue.
Sometimes, the impossible can become possible, if you're awesome!