Fter installing this hack, i've found oiut that some things are missing.
1. There is no such line in usercp.php
PHP Code:
if (!$vboptions['allowsignatures'])
{
eval(print_standard_error('error_signaturedisabled'));
}
2. When getting into the user settings in the acp, nolabel is shown for Disable Sig and when you select "Yes" and save, the settings won't be saved (maybe missing query for the update).