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Hello! I am currently having trouble with processing a PNM analysis. My input command is as follows: /nrgpackages/tools/fsl5/bin/pnm_stage1 -i /This/was/the/Physio_log.txt -o /this/was/the/basename -s 400 --tr=0.72 --smoothcard=0.1 --resp=3 --cardiac=2 --trigger=1 -v The output error (verbose) was: /nrgpackages/tools/fsl5/bin/popp -i /This/was/the/Physio_log.txt -o /this/was/the/basename -s 400 --tr=0.72 --smoothcard=0.1 --resp=3 --cardiac=2 --trigger=1 -v Input matrix is 116441 by 3 Checking options Main Processing Processing triggers in column 1 An exception has been thrown Logic error:- detected by Newmat: index error: requested index = 0 MatrixType = Rect # Rows = 0; # Cols = 1 Trace: main. This error occurs in both pnm_stage_1 and popp. We've checked the contents of these files with both the `file` command to verify its contents are ASCII only, and in Matlab to verify that the data and number of triggers is all as expected. We have also proccessed a resting state run which did process properly unlike the one above: Input matrix is 326520 by 3 Checking options Main Processing Processing triggers in column 1 ERROR:: Problem with trigger timing Estimated time per trigger does not match with integer number of slices Time per trigger / TR = 0.00717593 Processing resp in column 3 Smoothing with 41 Processing cardiac in column 2 Cardiac threshold = 2986.07 Mode loop: binsize = 40 maxh/totsamp = 0 Mean Heart Beat Interval = 0.6525 Interestingly, when we deleted the '--trigger' call, pnm_stage_1 and popp processed just fine but the peak detection were way off. Thanks! -Andrew Ji