Just an update I tried creating a ticket with them regarding this issue and here's their reply,
Reply from Webroot Support:
Hello,
This has been confirmed as a false positive from Symantec. We have received the following information from Symantec for correcting this issue:
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SSInstDll.dll is falsely identified as malicious. To fix this problem, please follow the instruction at the end of this email message to install the latest available definitions. Then, restore this file from NAV Quarantine.
Downloading and Installing RapidRelease Definitions:
1. Open your Web browser. If you are using a dial-up connection, connect to any Web site, such as: http://securityresponse.symantec.com/
2. Copy and paste the address ftp://ftp.symantec.com/public/english_us_canada/antivirus_definitions/norton_antivirus/rapidrelease/sequence/
into the address bar of your Web browser and then press Enter.(this could take a minute or so if you have a slow connection)
3. Now select 93933 folder or a higher. Open the folder.
4. Select the file symrapidreleasedefsx86.exe
5. When a download dialog box appears, save the file to the Windows desktop.
6. Double-click the downloaded file and follow the prompts.
Should you have any questions, please contact
your regional technical support from the Symantec website.
Jason A. | Enterprise Support
____________________________
Webroot Software, Inc.
2560 55th Street
Boulder, CO 80301 USA
Phone: 800-870-8102 Option 2
Fax: 303-442-3846
Web: www.webroot.com