For the moment I seem to have fixed the problem. I re installed  Poser Pro into C:/Program files/Smith Micro folder not C:/Program Files Smith Micro Poser Pro 2014.

I then made a copy of the .exe and put it in a folder marked Poser Pro 2014. This contains the main runtime.

I have since open and closed both DAZ Studio Pro Advanced 4.6 and Poser Pro 2014 several times and all seems to be working properly. I really do not know what has happened. Maybe something got moved accidently.However I think it was a Poser problem not DAZ!

Many thanks for all your advice and help! Cheers

Custom built computer 128 gigs RAM,2 Terrabyte hard drive, NVIDIA RTX 3060 12 Gig, Intel i9, Dual Dell Screens, 0/S Windows 11, networked to a Special 12th Generation intel I9, RTX 3060 12 Gig, Windows 11,64 gigs RAM, Dual Phillips Screens, 2 Terrabyte SSD Hard Drive plus 1 Terrabyte Hard Drive,3rd Computer intel i7,64 gigs ram, Graphics Card NVIDIA GeForce GeForce 1660 Ti 6 Gig,1 Terrabyte Hard Drive, OS Windows 10 64 Bit Dual Samsung Syncmaster 226bw Screens.Plus Lenovo Laptop 64 Bit,12 gigs Ram.Intel i7 chip.Windows 10 Pro and Ultimate. 4 x 2 Terrabyte Hard Drives and 2 x 2 Terrabyte external USB Hard drives. All Posers from 4 to Poser 2010 and 2012, 2014. Poser 11 and 12, 13, Hexagon 2.5 64 Bit, Carrara 8.5 Pro 64 bit, Adobe Photoshop CS4 Creative Production Suite. Adobe Photoshop CC 2024, Vue 10 and 10.5 Infinite Vue 11 14.5 Infinite plus Vue 15 and 16 Infinite, Vue 2023 and 2024, Plant Catologue, DAZ Studio 4.22, iClone 7 with 3DXchange and Character Creator 3, Nikon D3 Camera with several lenses.  Nikon Z 6 ii and Z5. 180-600mm lens, 24-70 mm lens with adapter.Just added 2x 2 Terrabyte portable hard drives.