Hello All, For the last couple of days I've been trying to get BET to run. I'm trying to use it through the GUI so am issuing the command 'Bet'. Unfortunately all this does is produce some error messages (see below) and exits. Any chance somebody can explain this behaviour and advise me how to correct it? -- Error in startup script: invalid command name "optionMenu2" while executing "optionMenu2 $w.f.variations.menu bet($w,variations) -command "bet:updatevariations $w" -default "Run standard brain extraction using bet2" -R "Robust ..." (procedure "bet" line 47) invoked from within "bet .rename" (file "/usr/local/fsl/tcl/bet.tcl" line 311) invoked from within "source ${FSLDIR}/tcl/${origname}.tcl" (file "/usr/local/fsl/bin/Bet" line 22) -- uname -a gives: Linux puccini 2.6.28-19-generic #66-Ubuntu SMP Sat Oct 16 18:00:58 UTC 2010 x86_64 GNU/Linux Ubuntu release is 9.04 (jaunty) I already have Tcl/Tk, version 8.4.16 installed so removed them from the extras build list Regards Martin Lowry Lecturer Centre for MR Investigations University of Hull