Hi. I wan't to load a NMRPipeSeriesTab intensity file: If I do: spectrum.read_intensities(file="peaks_list_max_std.ser", dir="spectrometer_data_processed", spectrum_id='auto', int_method='height') it works fine. But if i do ids=['0_28','1_0','2_4','3_32','4_60','5_2','6_10','7_16','8_8','9_20','10_50','11_18','12_40','13_6','14_12','15_0','16_24'] spectrum.read_intensities(file="peaks_list_max_std.ser", dir="spectrometer_data_processed", spectrum_id=ids, int_method='height') RelaxError: If a list of spectrum IDs is supplied, the intensity column argument must also be a list of equal length. Best Troels Emtekær Linnet