Hook prefsSaveHook failed: 1
key "chat" not known in dictionary
    while executing
"dict get $prevImagesD $type $pres"
    (procedure "GarbageCollect" line 7)
    invoked from within
"GarbageCollect $prevImagesD $imagesD"
    (procedure "::Rosticons::SavePrefsHook" line 31)
    invoked from within
"::Rosticons::SavePrefsHook"
    ("eval" body line 1)
    invoked from within
"eval $func $args"
key "chat" not known in dictionary
    while executing
"dict get $prevImagesD $type $pres"
    (procedure "GarbageCollect" line 7)
    invoked from within
"GarbageCollect $prevImagesD $imagesD"
    (procedure "::Rosticons::SavePrefsHook" line 31)
    invoked from within
"::Rosticons::SavePrefsHook"
    ("eval" body line 1)
    invoked from within
"eval $func $args"