QIRX 4.0.6 released two days ago contained a bug and this has now been fixed in QIRX 4.0.7 just released by Clem Schmidt. Automatic calibrate has been moved to the sync tab. Download QIRX 4.0.7 here. QIRX manuals: here. Compare V3 vs V4 features here. Mind: QIRX 4 is not free. You need a licence…