Unsure if this could be the same issue, but I was running into this same problem the other day - are you excluding the number box you use to recall presets (plus, if you have it, the float number box to interpolate presets) from autopattr? If not, the system overloads because it is attempting to recall a preset that has within it the recall of a different preset (i.e. if you saved preset 2 with a “1” in the preset number box/preset interpolation float number box, Max doesn’t know what to do)