I have recently encountered a weird problem. I’ve been working at it for a few hours now. When I pose my model using transpose and hit Tpose>subt to finish it gives me a message saying the topology has changed press yes to transfer details and no to delete. Well, if I hit yes zbrush crashes if I hit no I lose all detail. Its weird because this is the only model I have ever had this happen with.
For some reason an error is being introduced. Transpose Master works by splitting up the posed mesh into separate meshes and then importing those into the original subtools. If something happens to foul up that process then you get the sort of error you report. I’d need to take a look at the original mesh to find out why it is failing.
Is it always with the same subtool? If so, you could try leaving that out of the process to see if you get the same error. You will have to start from scratch though with a new combined mesh.