Hey, Thank you for your answers. Unfortionately the filei was working on yesterday, could not be saved and when i returned to the office today, my computer restarted and the file was lost. Regardless, i tried to reproduce your attempt to reproduce my error and found that working with polys created in c4d did not reproduce this error. My imported geometry might be the cause of this error. I have re-drawn the geometry in c4d and it seems it works now:-)
Thank you very much!