Support » Plugin: WordPress MU Domain Mapping » Error "function not found"

  • I have a not very easy installation on an Internationalized domain name (“รค” German). With the settings under dm_admin_page I get the following error message:

    Warning: call_user_func_array () Expects parameter 1 to be a valid callback, function ‘dm_admin_page’ not found or invalid function name in /www/htdocs/xxx/wp-includes/plugin.php on line 406

    What could that mean? Tried a lot, nothing helped.

    Thanks for support.

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