First many thanks for your replies.I am sorry I have not got back sooner but I am under the eye surgeons orders to limit my computer time as I have just had cataract eye surgery.Excuse my ignorance but Snarly says in his tutorial to " set the ground to be a shadow catcher" Can anyone assist me as to what this is and where do I find it in Poser Pro 11? I have included a screen grab. As you can see my subject is dark after turning the lights off according to the tutorial.Also I cannot get my bike to touch the ground.I have rendered in Firefly and figure is V4 WM on DAZ'S BMX Bike.If any further information is required,please let me know. Any assistance would be greatly appreciated. Cheers

Custom built computer 128 gigs RAM,4 Terabyte hard drive, NVIDIA RTX 4060 TI 16 GIG Gig,12 TH Generation Intel i9, Dual LG 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 Terabyte SSD Hard Drive plus 1 Terabyte Hard Drive,3rd Computer intel i7,128 gigs ram, Graphics Card NVIDIA RTX 3060 Gig,1 Terabyte Hard Drive, OS Windows 11 64 Bit Dual Samsung Syncmaster 226bw Screens.Plus INFINITY Laptop 64 Bit,64 gigs RAM.Intel i9 chip.Windows 11 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 4.23, 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.