.net - error when adding Custome C# template, VS2010, new computer -

i have custom template built in vs2010. new user able open template previously, can not longer. did reimaged , vs2010 reinstalled. there specific needed add new item based off custom template project. other users not reporting issue know install. error gets is:

unable cast com object of type 'system._comobject' class type 'envdte.dteclass'. com components enter clr , not support iproviderclassinfo of not have interop assembly registered wrapped in _comobject type. instances of type cannot cast other class; can cast interfaces long underlying com component support queryinterface calls iid of interface.

any clue how resolve. assume since works on every other computer, there nothing in code needs fixed (maybe message thrown user explain better) feels environmental.

thanks;