I'm following Mark's Dark Arts "Apply a label" tutorial and when using the preset milk bottles everything works fine. When I open my own beer bottle file and follow the same directions, I can't draw (or see what I've drawn) in the preview window - similar glass bottle and shader - although 'Rect Layer' shows up in shader tree. If I apply a color or texture map into the color channel, I don't get a preview and back in assembly room I can't do an area render.

test 1: Mark's tut with milk bottle preset - works

test 2: Mark's tut using my beer bottle file and glass shader - doesn't work

test 3: milk bottle preset with my glass shader - works

test 4: milk bottle preset with my beer bottle and glass shader pasted in - doesn't work

test 5: milk bottle preset, preset's glass shader applied to my beer bottle - doesn't work

test 6: my beer bottle file with preset's milk bottle pasted in, using preset glass shader - works

test 7: my beer bottle file with preset's milk bottle pasted in, my glass shader applied - works

I'm starting to think it's my beer bottle model, it's a vertex model, nothing fancy, but I can't draw a layer on it in texture room - and as stated above - "'Rect Layer' shows up in shader tree. If I apply a color or texture map into the color channel, I don't get a preview and back in assembly room I can't do an area render."

Where to from here? Probably something simple.

Humbly,
willingparticipant