hmm. strange. You added the Graemlin through the admin interface on 6.0.3?
I wiped and re-installed the hack, but am still getting the same error. Everything else works fine, but doaddgraemlin.php is failing me.
I am using the auto-quote hack, but I dont believe this should be a problem. THey both worked fine together on 6.0.2.
Once I went to 6.0.3 I also upgraded the markup hack from alpha to beta, so I am dealing with new code in both places. Therefore I am not sure where the error is coming from.