Hi Bob,

Thanks for the suggestions. I had the AFNI binaries updated and attempted to re-run the analysis. If I understand your last point regarding spaces correctly, I don't believe that is the case, but perhaps when you see the information below you might be able to let me know.

When attempting this in the updated version of AFNI, the main group results dataset is successfully written again, as is the residuals dataset. AFter that, it appears that the 3dclustsim is starting up just fine, but then an error message appears saying that AFNI cannot open the first subbrik of the residual dataset. I find this odd because the dataset is created and I am able to view it in AFNI. I have pasted below the output from the terminal beginning with the successful writing of the group data and the start of the clustsim section immediately following (sorry for the excessive length of what is below).

Thank you again,
Dominic
----------

++ Output dataset ./NewStream_VSseed_7_13_2016_clustsimtest_82subs_ControlsPIs_age_motion_gender_checkforgroupdiffsinCBCLsubs_noCBCLregressors_080_fu1fixed_80overlapmask_clustsim+tlrc.BRIK
++ Output dataset ./3dttest_residuals_test_7_13_2016+tlrc.BRIK
+ 2-sample test: results are ControlsRest - PIsResting
++ ================ Starting -clustsim calculations ================
+ ===== temporary files will have prefix TT.w4azUGC0cxp =====
+ ===== running 16 -randomsign jobs (626 iterations per job) =====
+ #0 jobs command:
3dttest++ -DAFNI_AUTOMATIC_FDR=NO -DAFNI_DONT_LOGFILE=YES -randomsign 626 -nomeans -toz -no1sam -mask /space/raid6/data/totten/SB/scripts/Restingstate2015/df_CT_PI_5_2015/GroupAnalysisScripts/Final_8_2015/6_29_2016_82subs_groupEPImask_80percentoverlap+tlrc.BRIK -covariates /space/raid3/data/totten/SB/scripts/Restingstate2015/df_CT_PI_5_2015/CovariateFiles/Final_8_2015/CTminusPIscovariates_age_motion_gender_82subs_6_15_2016_checkforgroupdiffsinCBCLsubs_noCBCLregressors.1D -center SAME -setA rAAA SB115_fu1 3dttest_residuals_test_7_13_2016'[0]' SB184 3dttest_residuals_test_7_13_2016'[1]' SB061 3dttest_residuals_test_7_13_2016'[2]' SB300_fu1 3dttest_residuals_test_7_13_2016'[3]' SB235_fu1 3dttest_residuals_test_7_13_2016'[4]' SB190 3dttest_residuals_test_7_13_2016'[5]' SB152_fu1 3dttest_residuals_test_7_13_2016'[6]' SB276 3dttest_residuals_test_7_13_2016'[7]' SB144 3dttest_residuals_test_7_13_2016'[8]' SB001 3dttest_residuals_test_7_13_2016'[9]' SB236_fu1 3dttest_residuals_test_7_13_2016'[10]' SB131_fu1 3dttest_residuals_test_7_13_2016'[11]' SB234_fu1 3dttest_residuals_test_7_13_2016'[12]' SB164_fu1 3dttest_residuals_test_7_13_2016'[13]' SB197_fu1 3dttest_residuals_test_7_13_2016'[14]' SB283 3dttest_residuals_test_7_13_2016'[15]' SB258_fu1 3dttest_residuals_test_7_13_2016'[16]' SB274 3dttest_residuals_test_7_13_2016'[17]' SB112 3dttest_residuals_test_7_13_2016'[18]' SB240_fu1 3dttest_residuals_test_7_13_2016'[19]' SB207_fu1 3dttest_residuals_test_7_13_2016'[20]' SB297 3dttest_residuals_test_7_13_2016'[21]' SB245_fu1 3dttest_residuals_test_7_13_2016'[22]' SB198_fu1 3dttest_residuals_test_7_13_2016'[23]' SB034_fu1 3dttest_residuals_test_7_13_2016'[24]' SB134_fu1 3dttest_residuals_test_7_13_2016'[25]' SB067_fu1 3dttest_residuals_test_7_13_2016'[26]' SB091_fu1 3dttest_residuals_test_7_13_2016'[27]' SB264 3dttest_residuals_test_7_13_2016'[28]' SB181_fu1 3dttest_residuals_test_7_13_2016'[29]' SB135_fu1 3dttest_residuals_test_7_13_2016'[30]' SB218 3dttest_residuals_test_7_13_2016'[31]' SB182 3dttest_residuals_test_7_13_2016'[32]' SB278 3dttest_residuals_test_7_13_2016'[33]' SB036_fu1 3dttest_residuals_test_7_13_2016'[34]' SB108 3dttest_residuals_test_7_13_2016'[35]' SB186 3dttest_residuals_test_7_13_2016'[36]' SB011_fu1 3dttest_residuals_test_7_13_2016'[37]' SB298 3dttest_residuals_test_7_13_2016'[38]' SB217 3dttest_residuals_test_7_13_2016'[39]' SB306_fu1 3dttest_residuals_test_7_13_2016'[40]' SB320 3dttest_residuals_test_7_13_2016'[41]' SB007_fu1 3dttest_residuals_test_7_13_2016'[42]' SB105_fu1 3dttest_residuals_test_7_13_2016'[43]' SB299 3dttest_residuals_test_7_13_2016'[44]' -setB rBBB SB085 3dttest_residuals_test_7_13_2016'[45]' SB068 3dttest_residuals_test_7_13_2016'[46]' SB046_fu1 3dttest_residuals_test_7_13_2016'[47]' SB322 3dttest_residuals_test_7_13_2016'[48]' SB025_fu1 3dttest_residuals_test_7_13_2016'[49]' SB307_fu1 3dttest_residuals_test_7_13_2016'[50]' SB147 3dttest_residuals_test_7_13_2016'[51]' SB205 3dttest_residuals_test_7_13_2016'[52]' SB227 3dttest_residuals_test_7_13_2016'[53]' SB081_fu1 3dttest_residuals_test_7_13_2016'[54]' SB130 3dttest_residuals_test_7_13_2016'[55]' SB291_fu1 3dttest_residuals_test_7_13_2016'[56]' SB080_fu1 3dttest_residuals_test_7_13_2016'[57]' SB069 3dttest_residuals_test_7_13_2016'[58]' SB021_fu1 3dttest_residuals_test_7_13_2016'[59]' SB041_fu1 3dttest_residuals_test_7_13_2016'[60]' SB127_fu1 3dttest_residuals_test_7_13_2016'[61]' SB140_fu1 3dttest_residuals_test_7_13_2016'[62]' SB199 3dttest_residuals_test_7_13_2016'[63]' SB312_fu1 3dttest_residuals_test_7_13_2016'[64]' SB327 3dttest_residuals_test_7_13_2016'[65]' SB206 3dttest_residuals_test_7_13_2016'[66]' SB139 3dttest_residuals_test_7_13_2016'[67]' SB332_fu1 3dttest_residuals_test_7_13_2016'[68]' SB220_fu1 3dttest_residuals_test_7_13_2016'[69]' SB136 3dttest_residuals_test_7_13_2016'[70]' SB072_fu1 3dttest_residuals_test_7_13_2016'[71]' SB124_fu1 3dttest_residuals_test_7_13_2016'[72]' SB123_fu1 3dttest_residuals_test_7_13_2016'[73]' SB030_fu1 3dttest_residuals_test_7_13_2016'[74]' SB336_fu1 3dttest_residuals_test_7_13_2016'[75]' SB087_fu1 3dttest_residuals_test_7_13_2016'[76]' SB328 3dttest_residuals_test_7_13_2016'[77]' SB196 3dttest_residuals_test_7_13_2016'[78]' SB242_fu1 3dttest_residuals_test_7_13_2016'[79]' SB058_fu1 3dttest_residuals_test_7_13_2016'[80]' SB148_fu1 3dttest_residuals_test_7_13_2016'[81]' -prefix TT.w4azUGC0cxp.000.nii
++ 3dttest++: AFNI version=AFNI_16.2.01 (Jul 9 2016) [64-bit]
++ Authored by: Zhark++
++ 49053 voxels in -mask dataset
++ Covariates file: 4 columns, each with 82 rows
+ Covariate column labels: Subject;Age;Gender;Motion
+ Found 3 numeric columns: Age Gender Motion
** FATAL ERROR: Option -setA: can't open dataset '3dttest_residuals_test_7_13_2016[0]'
** Program compile date = Jul 9 2016
+ ===== jobs have finished (10.01 s elapsed) =====
+ ===== starting 3dClustSim =====
3dClustSim -DAFNI_DONT_LOGFILE=YES -inset TT.w4azUGC0cxp.???.nii -prefix TT.w4azUGC0cxp.CSim -LOTS -both -cmd TT.w4azUGC0cxp.CSim.cmd -mask /space/raid6/data/totten/SB/scripts/Restingstate2015/df_CT_PI_5_2015/GroupAnalysisScripts/Final_8_2015/6_29_2016_82subs_groupEPImask_80percentoverlap+tlrc.BRIK
++ 3dClustSim: AFNI version=AFNI_16.2.01 (Jul 9 2016) [64-bit]
++ Authored by: RW Cox and BD Ward

Fatal Signal 11 (SIGSEGV) received
THD_open_tcat
THD_open_dataset
get_options
3dClustSim
Bottom of Debug Stack
** AFNI version = AFNI_16.2.01 Compile date = Jul 9 2016
** [[Precompiled binary linux_openmp_64: Jul 9 2016]]
** Program Death **
** If you report this crash to the AFNI message board,
** please copy the error messages EXACTLY, and give
** the command line you used to run the program, and
** any other information needed to repeat the problem.
** You may later be asked to upload data to help debug.
** Crash log is appended to file /space/raid/home/dfareri/.afni.crashlog
** FATAL ERROR: ===== 3dClustSim command failed (( =====
** Program compile date = Jul 9 2016