Hi,
unfortunately, this is not what I meant.
What you describe is having multiple biological replicates for each conditions, which is not just possible, it's advised and most welcome.
However, to process the data and prepare for group comparison, we need to know which measurements belong to which groups and replicates. Usually, we expect that in each run, each channel corresponds to a single condition (and single biorep. Conversely, single condition may match to multiple channels due to different bioreps). In some processing steps, we assume that for each Mixture+TechRepMixture, Channel-Condition annotation is the same across all runs (fractions in your case).
However, in your data, this assumption is not true. For run 20210716_ABR_XX_Mix03_Complex, Channel-Condition pairs are different than in other runs. Because of that, one of processing steps fails. If that Channel-Condition annotation is a mistake, it's enough to fix it. If not, we might need to update MSstats code.
Kind regards,
Mateusz