VDC: Problem with Combobox

Hello,

I have a problem with the ui.Combobox stuff. Consider the following 
example:

f1.per
>>> 
DATABASE FORMONLY
SCREEN
{
Combotest [f     ]
}

ATTRIBUTES
COMBOBOX f = FORMONLY.mycombo TYPE CHAR;
<<<

t1.4gl
>>> 
main
define lv_combo ui.combobox
define lv_entry char(20)
close window screen
options input wrap
open window w1 with form "f1"
let lv_combo = ui.combobox.forname("mycombo")
call lv_combo.clear()
call lv_combo.additem("one", "entry one")
call lv_combo.additem("two", "entry two")
input lv_entry from mycombo
close window w1
end main
<<<

if I comple and run the example, VDC crashes and 4gl stops with errno 
104 / 32

I'm using the current CVS version of aubit4gl on ubuntu linux 13.10 
x86_64 and VDC from www.ventas.de on a win7 x86_64

Example source and debug.out + proxy.log is in the attached tar.gz

what am I doing wrong?

thanks for any help!

Walter

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