Again, related to systems with slow connection between ScanImage and processing machines.
According to syncandcrunch logic, stitching starts as soon as there is FINISHED file in the root folder of the sample.
When the data syncing lags behind acquisition it means that stitching starts when not all the raw data for the first channel (blue) is on the processing machine yet, which results in different sizes of the downsampled stacks (stitchit.sampleSplitter fails on loading them) and different number stitched sections for different channels ( blue < green < red)