Error in startup script: cannot use geometry manager pack inside .frmBody.frmList.nBook.flblList.f which already has slaves managed by grid
    while executing
"pack $lblList -side left -fill both -expand yes"
    (file "/home/ksv/Projects/tcl/tle/lib/modules/gui.tcl" line 230)
    invoked from within
"source [file join $dir(mod) gui.tcl]"
    (file "/home/ksv/Projects/tcl/tle/tle.tcl" line 121)