bad option "1": must be atime, attributes, channels, copy, delete, dirname, executable, exists, extension, isdirectory, isfile, join, link, lstat, mtime, mkdir, nativename, normalize, owned, pathtype, readable, readlink, rename, rootname, separator, size, split, stat, system, tail, type, volumes, or writable
bad option "1": must be atime, attributes, channels, copy, delete, dirname, executable, exists, extension, isdirectory, isfile, join, link, lstat, mtime, mkdir, nativename, normalize, owned, pathtype, readable, readlink, rename, rootname, separator, size, split, stat, system, tail, type, volumes, or writable
    while executing
"file $ThumbNum == 1"
    (procedure "PlotPolarSigThumb" line 11)
    invoked from within
"PlotPolarSigThumb 1"
    invoked from within
"if [file exists $TMPXpolSigTxt] {
    if {$GnuplotPipeXpol == ""} {
	GnuPlotInit 0 0 1 1
    	set GnuplotPipeXpol $GnuplotPipeFid
	}
    PlotPolarSigT..."
    (procedure "PlotPolarSig" line 92)
    invoked from within
"PlotPolarSig"
    invoked from within
".top240.fra71.fra72.fra79.but81 invoke"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 [list $w invoke]"
    (procedure "tk::ButtonUp" line 24)
    invoked from within
"tk::ButtonUp .top240.fra71.fra72.fra79.but81"
    (command bound to event)