Pennsylvania Income from 1099-R appears to be incorrect.

I received 3 1099-R forms, 2 from 401-k distributions and 1 from a company paid pension.  Pennsylvania does not consider money from these accounts as income.  However; the one 1099-R from my company pension is being included as part of my taxable income for the state of Pennsylvania.  This has NOT been a problem in the past few years, so why is it a problem this year?  I need to get this resolved so I can file my state return.  Please let me know as soon as possible what can be done to correct this issue.  Thank you.