Hi everyone, made a similar post in GitHub about a week ago, hoping to get a response here. OS: macOS Catalina Matlab: R2019b PsPM: 4.2.1 When following the tutorials for both GLM and Non-Linear Model, I get errors: For GLM: 23-Dec-2019 19:48:58 - Running 'Import' Pulse data was converted to waveform with a sampling rate of 5000.00 Hz, to allow 10-fold oversampling. Warning: call of pspm_butter failed In pspm_prepdata (line 102) In pspm_pulse_convert (line 75) In pspm_get_spike (line 82) In pspm_import...