Our office recently had an Objet technician come out and fully service our Objet Eden250 printer to get it up and running. Yesterday we were able to print a test page to confirm the print heads were working, but today every time we attempt to print a test page or print head alignment no material seems to come out of the heads at all. We have cleaned and purged the heads, etc. to no avail. We have tried sending a 3D print job that successfully printed in the past and the printer seems to think that it is printing the file, but again, no material is being printed to the tray (no modelling material and no support material). Any ideas as to what may be causing this? We aren’t getting any error messages.