I just started using Corona Renderer for 3ds Max to do some Arch Viz and I am using Substance Painter as my texturing program. Since CoronaBitmap has no native UDIM support, I am using the Bitmap Lookup OSL shader. It renders fine but when I change something in my textures and re-export overwriting the old ones, Corona still takes the old textures and renders it. Have tried it with png and tiff textures.
In Arnold there is a way to flush the texture cache. Is there a similar thing in Corona?