ProSeries treats the M1PR as a completely separate state package.  Are you possibly not in the correct module in ProConnect?

I would start here:

George4Tacks,

Thank you for the reply. That is the area that is showing me a "stop sign" for entering info. I have already filed federal and state (income) returns in April. Wondering if it could be associated with the program's new locking rule. Would not think so, but this is first time I could not prepare a M1PR for filing, August 15th filing deadline.

IRonMaN,

Thanks for the reply. It is a separate return, but is incorporated in the State and Local section of Proconnect.