Hi Mintu, I'm sorry about this problem! I should have fixed it already but missed this message from Phil Evans that he posted in January: "Columns N(+) and N(-), both of type I, are recent additions to the output file from Aimless. They are the number of observations merged into I(+) and I(-) respectively" AutoSol doesn't know about these columns and can accidentally guess that they are data. To get around this column, use a command like this to create a data file that does not contain the N(+) and N(-) columns: phenix.reflection_file_converter aimless.mtz --mtz=aimless_noN.mtz --label="I(+" ?where the --label=xxxx command specifies the first few characters of the columns you want to use as I+/I- data. Then use aimless_nonN.mtz instead of aimless.mtz as input to autosol. I will fix this in autosol. Let me know if that does not do it! All the best, Tom T Dear all, I am getting an error message "Invalid MTZ column_types for the given miller_array." while I try to run AutoSol. The last line in the log is "Adding array ['N(+)', 'N(-)'] to output file with type II". Do you have any suggestion how to fix this error? Thanks a lot in advance. Best, Mintu