Send us the structure set for now. We may be able to diagnose the issue from that.
If that’s not enough, then scan a phantom or use a publicly available DICOM data set (for example, download from TCIA) and perform a similar contouring in the TPS and share that data set.
I don’t know what this slicer@discourse… email address is. In the meantime, @Sunderlandkyl has received the file from you, so that is enough. He’ll investigate and report back here.
I managed to fix the issue by rotating the structure before triangulation so that the contour normals align with the z-axis, and then rotating back afterwards.
Let me know if this fixes your issue, or if you have any other problems!