Forrtl: Severe (194): Run-time Check Failure... message shown when using AutoPIPE Vessel

hi,

I'm using AutoPIPE Vessel rev. 41.03.00.009 when I'm trying to perform flange calculation as per EN 13445 AnnexG/EN 1591 I get the following error (see below) and the calculation stop running, any clue?

thanks for your help

regards