TurboTax updates and state software for 2011 are no longer available. You will not be able to get the 2011 program to run.
You could try TaxPrinter. You send them your .tax2011 file and they send you back a PDF of the tax return, which you can then print with Acrobat Reader. TaxPrinter has no connection with TurboTax. I have never used TaxPrinter, so I cannot make a recommendation. I'm just making you aware of it.
