Hi,

First time using the list, so my apologies if not submitting this question through the appropriate channel.

I successfully ran a first-level feat connectivity analysis on a series of hippocampal seeds in 12 subjects.

I have an anterior and posterior seed, and want to look for network differences at the group level.

When running the higher level analysis, using a simple paired t-test design, I’m getting some strange errors.

When I try to run all 12 subjects, I get an error at the post-stat stage:

“child process exited abnormally

                While executing

“if { [ catch {

For { set argindex 1 } { $argindex < $argc } { incr argindex 1 } {

                Switch – [ lindex $argv $argindex ] {

                                -I {

                                                Incr argin…”

                                (file “/usr/share/fsl/5.0/bin/feat” line 119)”

Haven’t been able to find anything online regarding this error.

What’s particularly odd is that I’m able to run smaller numbers of my subjects in the same higher-level analysis with no error. Up to 9 it seems (have looked at subsets of subjects to make sure it’s not one bad apple that’s throwing things off).

This is on a laptop running Ubuntu 11.4.

I’ve also tried doing the analysis on a mainframe running Ubuntu 12.4.

There, I get the same error message, but it can successfully run even FEWER subjects w/out spitting an error (4 or 5 it seems).

Any idea what’s going on here? Operating system problem?

Any help would be greatly appreciated….

Thanks much,

Peter Cook

Post-Doctoral Fellow

Center for Neuropolicy

Emory University