Unfortunately, I did all as recommended (main screen, stopped, int/ext sync and repeated many times).
The error is on preset 6 (PRESET 6 not saved), so I'm not sure where to understand "The error you showed is on Preset 2":
<Preset_6>
<Name>Preset 6</Name>
<Line_0>Dump RAW Preset:6</Line_0>
<Line_1><PreL01-51,0,1,0,0,0,0,24,26,0,8,5,0,0,0,1,40,40,1,1></Line_1>
<Line_2><PreL02-54,0,3,0,0,0,20,29,19,0,3,14,1,0,0,100,1,1,2,2></Line_2>
In fact, the error happens each time the 11th value (14, here) is higher than 6 no matter the preset. Greater value were present in others presets but, once I change them (manually in file) to 6 or less, it never fails. Greater than 6, it always fails. No exception. I tried many export-import loops, too.
Edit: the issue doesn't depend of <Line_X>, it happens for each 11th element greater than 6 on any Line.
The error is on preset 6 (PRESET 6 not saved), so I'm not sure where to understand "The error you showed is on Preset 2":
<Preset_6>
<Name>Preset 6</Name>
<Line_0>Dump RAW Preset:6</Line_0>
<Line_1><PreL01-51,0,1,0,0,0,0,24,26,0,8,5,0,0,0,1,40,40,1,1></Line_1>
<Line_2><PreL02-54,0,3,0,0,0,20,29,19,0,3,14,1,0,0,100,1,1,2,2></Line_2>
In fact, the error happens each time the 11th value (14, here) is higher than 6 no matter the preset. Greater value were present in others presets but, once I change them (manually in file) to 6 or less, it never fails. Greater than 6, it always fails. No exception. I tried many export-import loops, too.
Edit: the issue doesn't depend of <Line_X>, it happens for each 11th element greater than 6 on any Line.