Here i am writing again on this bug with more easy example. I cant stop to point this problem because its very important in my material workflow having the possibility to tile different images inside a material.
1) bitmap as a layer mask, everything work fine.
2) as long as the layer stays as layer the projector shader works fine.
3) if by any reason, the layer appears in the projector as a corona shared shader, this no longer works.
4) same story as image 3, if it has to deal with any corona shred shader, no longer works.
5) material has been rebuild from scrats and it works just fine.
6) projector is used to map both the layer mask and the bump and no longer works.
Projector shader is a real truble because forces to completelly rebuild a shader, and in case of complex material is a real pain.
As a personal note i think the projector shader of c4d should be introduced inside the corona bitmap directly, like in 3dsmax or in vray, where you are not forced to choose a projection for each bitmap you want to tile. So it will allow the same material to be used for multiple object with different UVW coordinates and different projection methods.
