run wordpress without the template for amfphp

Hi!
I am trying to create a plugin that uses amfPHP for object-to-flash-communication.
Therefore I need WordPress to run just with its DB-functions…

There is this great excample which uses “define(‘WP_USE_THEMES’, false);” [1] and which works finde.
But from inside the amfphp-browser I always get errors with the cache-function of wordpress. For excample when calling get_result()…

Does someone know why this caching-stuff breaks inside amfphp but not in the use-theme-false-excample?
Is there a workaround?
I tried the define no-cache-stuff but it didnt change anything.

Thanks!

[1] https://www.shooflydesign.org/buzz/past/embedding_wordpress.html

similar question over at https://sourceforge.net/forum/forum.php?thread_id=1777524&forum_id=247252