Dear group, I am running fsl 4 on Mac OSX Tiger, and I get the following error when I try to start the Renderstats_gui: [local/fsl/bin] dpat% Renderstats_gui Error in startup script: invalid command name "tixControl" while executing "tixControl $w.f.statss -label " Number of stats images " -variable vars($w,statss) -step 1 -min 1 -max $vars($w,maxstatss) -selectmode immediate -com..." (procedure "render" line 20) invoked from within "render .rename" (file "/usr/local/fsl/tcl/renderstats.tcl" line 476) invoked from within "source ${FSLDIR}/tcl/${origname}.tcl" (file "/usr/local/fsl/bin/Renderstats_gui" line 22) Other X11 programs start up fine. I believe I am up to date on all fsl patches. Any suggestions appreciated, Thankyou, -Dianne -- Dianne Patterson, Ph.D. [log in to unmask] ERP Lab University of Arizona 621-3256 (Office)