Upgraded Web Essentials 2012 and LESS stopped working - visual-studio-2012

I recently upgraded Web Essentials 2012 from 2.7 to 3.7, and my LESS files no longer show the preview pane and do not generate a CSS file on save. I have the "Generate CSS file on save" option set to true, and I have Web Tools installed. Everything worked before I upgraded the extension.
Any help would be greatly appreciated.
Thanks!
Edit
Is it possible to downgrade? I saw it's possible to download previous versions of Web Essentials 2013 from GitHub but not 2012.

I found downloads for their older versions in the changelog. It didn't resolve my problem, but maybe it will help someone else.

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I have downloaded a .vslx file and installed which cuases web essentials to be part of VS 2012.
This may be a silly question.
But How can I remove the webessentials from vs.I cannot find such an option in VS 2012. I found it total messy
Ok I figured it out.
From extensions and updates in tools we can remove the plugins of VS

Add options to 'Add...' in Visual Studio 2012 Folder

I accidentally did a Windows 8 Refresh (DON'T EVER DO THAT!) and now after re-installing VS2012 I don't have as many options when I am adding new files.
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This appeared to be fixed after updating to the latest update of VS2012 and installing Web Essentials.

web essentials 2012 crashes when I open a project that already has a file open

An interesting things is happening and I was hoping someone would be able to help me with it.
Visual Studio 2012 with Web Essentials installed was working fine until the latest update (the one where they removed less, coffeescript, etc.)
However since the update, I am having problems. This only happens when I open a project that has a file - which web essentials would act upon - already open.
If I close all of the tabs with cshtml/less/css files before I close a project. Then the next time I open that project, I am fine. I can even open those files, and web essentials kicks in with all of its extra features. But if even one of those files are open when the project was saved, and therefore opened automatically when the project is loaded, then the entire visual studio crashes.
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Thank you
Found the issue after days and days of searching (only minutes after posting this question :))
The latest version of Web Essentials requires ASP.NET and Web Tools 2012.2
I had heard a lot about these Tools 2012.2 but I thought that they were an extension - maybe the "Microsoft Web Development Tools" installed automatically with visual studio or something that would get upgraded automatically with all of the auto updating software running on my machine.
So I tried updating all of the extensions and refreshing and refreshing and searching for updates - to no avail.
I even downloaded and installed VS2012 Update 2 CTP4 thinking that that must be this elusive update that everyone is talking about.
Well as I'm sure you guessed, its actually none of the above.
The link is http://go.microsoft.com/fwlink/?LinkId=282650
It is listed on the home page of web essentials but not on the page that pops up when you run the update.
I hope this link helps someone.

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