Help!! I have upgraded to SR3 and now my shadows are rendering incorrectly (They worked fine on P5 SR2, which by the way, gave me NO problems.)

System Specs: WindowsXP Professional, Amd Xp2400 processor, 1.5Gigs DDR333 Cas2. Nvidia GeForce Ti 4600, Soundblaster Audigy, All with latest drivers etc. Poser5 is on its own 80Gig drive

Settings: Lightmaps at 5000, Production Render, Shadows on, Raytracing on, Smooth polygons on, Remove backfacing polygons on, Use texture filtering on, Depth of Field off, Motion blur off, all other settings at default.

I include example picture showing the same render and settings, done first with just P5 and then with P5 Sr3.

Any idea what is happening? Anyone? (look at the glasses. This seems to happen with props and clothing especially.)