Error when configuring a chatroom

[sander]

I get this error when I try to open the configure dialog of a chatroom:

image "" doesn't exist
image "" doesn't exist
    while executing
"ttk::label $w.frall.head -style Headlabel -text [mc {Configure Chatroom}] -compound left -image [list $im background $imd]"
    (procedure "::MUC::BuildInfo" line 41)
    invoked from within
"::MUC::BuildInfo $chatstate(roomjid)"
    (procedure "::GroupChat::Info" line 7)
    invoked from within
"::GroupChat::Info ::GroupChat::dlg2"
    ("uplevel" body line 1)
    invoked from within
"uplevel #0 $locals($name,-command)"
    (procedure "::ttoolbar::Invoke" line 5)
    invoked from within
"::ttoolbar::Invoke .jgc2.frall.top.tray info"
    invoked from within
".jgc2.frall.top.tray.f.i4 invoke "
    invoked from within
".jgc2.frall.top.tray.f.i4 instate {pressed !disabled} { .jgc2.frall.top.tray.f.i4 state !pressed; .jgc2.frall.top.tray.f.i4 invoke } "
    (command bound to event)

[Mats (matsben)]

Typo.
This is the danger of big code changes close to a release.