Error 449 Argument not optional


We are still using PFW 5.9 and PSQL10. (and Magic 9.4)
I need help. Suddenly, after years of working with the PFW , on win 7,  

Getting an error on some W/S , while trying to start the PFW client.:
Error 449 Argument not Optional

Any idea how to adders this error ?

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