I keep encountering a really annoying and erratic behaviour when calibrating my meshes. Once I put in my 6th point the mesh just disappears, and I am left with 6 red dots. However, my margin for error is very good (less than 15px).
Is there something I am doing wrong? Annoyingly, *sometimes* - say once out of every 10 attempts - it works, but with no pattern I can discern.