Hi Jeff, yes, we did. We tried several softwares for filtering our object. Meanwhile we solved the problem. Our mistake was to copy and paste differents parts of severals old RDS files into a one new RDS layer. These parts had different scales. So we reorganized our RDS file and now the firefly rendering is working. It was a hard day to figure it out. But we are curios, why this firefly got these problems. Is there another way to fix this problems for example by editing the object file or cr2? Thanks Matthias + Daniel