Unable to open a number of different types of file types (haml, rhtml, rxml)

Running RubyMine 4.5 on the Mac OS X Lion. Am unable to open a number of various file types in the code editor including *.haml, *.rhtml, and *.rxml in the code editor.
I saw the http://http://devnet.jetbrains.net/thread/437417?tstart=0 thread which I assume to be the same problem. I am attaching my idea.log