Ender 3 V2 HW 4.2.2 Current SW 2.0.8.4 PLA Two days ago I upgraded to Creality Official DD and a CR Touch. I updated the firmware, leveled the bed, ran the auto level and determined and set offset. Test print was a 5x5mm test cube, good. Second print was about a 10 hour print, good. 3rd print this morning and it failed, would not extrude from start. I tried to reprint the cube that was good yesterday, it also did not extrude. I can extrude manually by hand and via the UI (Extruder), so it's not clogged and the extruder motor tests good. I have tried raising the Z offset and even at 0.0 it doesn't, re-flashed the firmware, redownloaded the .bin and re-flashed from a different reformatted microSD and reloaded the print files later from the reformatted SD. Same results. I have searched the web and it's "clogged nozzle", "too close to bed" and "bad extruder", which I have verified OK. Everything was fine prior to upgrade, until my nozzle clogged. I could have repaired, but it seemed like a goodtime to upgrade and add the CR Touch while in there. Had this issue started prior to the good previous prints, I would have been worried because everything was hot glued to the motherboard and that was a real pain, but again everything was good for 15 hours after upgrade. I can't really imagine that any pictures would help it's an Ender 3 V2 with a DD and CR Touch roaming aimlessly around the bed. I would appreciate any assistance. I have a print that I really need by tomorrow, so thanks in advance for any help. @timed