SP2010: “Check out” functionality doesn’t allow user to check out MV2, mcr and raw files

i Have a user with the following issue:

“Check out” functionality doesn't allow user to check out  MV2, mcr and raw file types to his local drafts folder. 
The pop up window to allow him to check out documents to his drafts folder but checkout doesn't come up after clicking on check out. It just checks out the file.

The procedure to resolve this is similar to adding a PDF iFilter and the part that actually brings up the Save to local drafts is the part where you edit the docicon.xml file

http://daniecsp.blogspot.com/2012/11/sp2010-installing-pdf-ifilter-and.html
As above, look for a icon for the file, upload it to the images folder and add a line in the docicon.xml for that extension.

Icon Path: \Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\IMAGES\

DocIconPath: "C:\Program Files\Common Files\Microsoft Shared\Web Server Extensions\14\TEMPLATE\XML." and edit the docicon.xml file

Important:
You also need to have the file type associated with a application on your local machine.
If you click on the file and it ask you what you want to open the file with it is not associated with a application and it wont give you the option to save to drafts.