Just to mention this, Vue 5 now maps alpha planes differently than they way it mapped them in Vue 4 and Pro. The first thing you should try is changing the mapping to object: parametric, this is the new setting for alpha plane objects. The second thing you need to try is playing with the scale, I found when doing the beta testing that old scenes especially when it came to textures do not transfer well from Vue 4 up to Vue 5, which isn't really all that surprising since the same thing happened when people upgraded to Vue 4 from Vue 3. At any rate, this appears to be the most likely case as you will usually notice a tiling effect on the alpha plane. The thing about this problem is that it was actually a bug with Vue 4, not Vue 5, they've simply fixed the way alphas are mapped for Vue 5. So...play with the scale and try different mapping options and you should be able to fix the alpha plane. Hope this helps.