Dear Dr. Mumford, we tried to run some LSS models, but for a few trials we got an error (most trials ran without issue). The error from fsl occurred at preprocessing stage2: if {[catch {for {set argindex 1} {$argindex<$argc} {incr argindex 1} {switch--[lindex$argv $argindex] {-I {incr arginde...And stats: --in=filtered_func_data --rn=stats --pd=design mat --thr=1000.0 --sa --ms=5 --con=design con. Input files should be all correct. We wonder if you have any insights about this issue. Thank you!!