Voxel Mesh - Additive Manufacturing Scenario

Hello colleague,

I've been trying to simulate an additive manufacturing LPBF process and using sweep 3d meshes and hex partition meshes I can perform it without flaws. But when I define a voxel mesh, an error appears saying that it was not possible to indentify the tie between the part and build tray. However, the tie was defined such as done for the case using the sweep or hex-meshes. It says also that probably the mesh is no refined enough, but it is already with a voxel of 0,5mm. What would you suggest me to do? 

PS.: The voxel mesh is important for me, because I am going to study the variation of the threshold activation of the support structures.