Problem with customised status_enum_string

I have following in config:

$g_status_enum_string = 
'10:new,20:feedback,30:acknowledged,40:confirmed,50:investigating,60:ready 
for testing,70:testing,80:resolved,90:closed';

Together with changes/additions in strings_english.txt, seems to
work. But in 'View Issues' I get error:

SYSTEM WARNING: call_user_func_array() [function.call-user-func-array]: 
First argument is expected to be a valid callback, 
'custom_function_default_enum_target_status' was given

To config_inc.php I added:
$g_show_detailed_errors = ON;
$g_show_notices = ON;
$g_show_warnings = ON;

But still no more info. Any ideas how to fix, or how to get more
debugging information?

-- 
M. Tavasti /  [email protected]  /   +358-40-5078254

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