[GRASS-dev] problem with graphical user interface

hi all.
i've just installed grass-6.1.cvs_src_snapshot_2006_05_10.
when i press the button "enter grass" the shell shows me this message:

GRASS 6.1.cvs (ciao):/home/serena > Error in startup script: unknown option
"-of
frelief"
    while executing
"radiobutton $tb.pointer -image [image create photo -file
"$iconpath/gui-pointe
r.gif"] -command "MapCanvas::stoptool $mon" -variable maptools -value..."
    (procedure "MapToolBar::create" line 40)
    invoked from within
"MapToolBar::create $map_tb"
    (procedure "MapCanvas::create" line 50)
    invoked from within
"MapCanvas::create"
    (procedure "Gm::startmon" line 11)
    invoked from within
"Gm::startmon"
    (procedure "Gm::create" line 71)
    invoked from within
"Gm::create"
    (procedure "main" line 29)
    invoked from within
"main $argc $argv"
    (file "/usr/local/grass-6.1.cvs/etc/gm/gm.tcl" line 527)

and the graphical user interface doesn't run.

how can i solve this problem?

Serena