I don't know how to explain what the problem is any clearer than I have.  One more time:

I am entering the Vendor information for a W-2 in Pro Series Basic.  I have entered the EIN #, the name,

the street address.  When I enter NV I get a message it is not a valid state and when I input the zip code I get a message it is not correct.  

I have tried the Part Year Resident, it does not recognize NV.  There fore I cannot allocate between the two states.