I'm checking on this right now. And it seems to be related with, the new version was targetting framework 4.5. I might have to go with two downloads for the two versions. Will update here once it's ready. Until then you can use this link to get the previous version installed. http://reviewpal.codeplex.com/releases/view/59999 Looks like I can't support both versions with a single extension file due to framework versions I have to add references to. Hope you can up-vote the extension given that your issue i resolved :)
Good work on this plugin!
I'm using the VS 2012 version and found that if ReviewPalFileLocation can be a relative path, it'll be much better since not all my team members map their source code to the same absolute path.