After you posted that you found a Trojan in the add-on, I’ve removed the add-on for download and I’ve also done some checking and googling.
I found a
forum thread at AVG that talks about the Trojan you mentioned and it seems that AVG is not that accurate at finding this Trojan since a
few users of AVG have had files infected and they know for a fact that these files are not infected.
Also I’ve scanned my computer for this Trojan and found nothing.
According to Ms Security Essentials who also has this Trojan in their definition database, the Trojan does a few things with the computer that’s infected.
None of these things have been done with my computer.
I’ve used the following software to search for this Trojan:
• Microsoft Security Essentials
• McAfee
• Comodo Antivirus
I’ve also scanned the add-on zip-file with two online services (where you can upload the file for scanning) and they found nothing.
• Avast Online Scanning
• VirusTotal
My conclusion is that the add-on is Not infected with this trojan and I'm making it available for download again.