ERROR: plphp: unable to register function "plphp_proc_4947785_trigger"

I'm using plphp to create a trigger. I don't see any
syntax errors in it (I've checked it with php -l
(lint)). When I update a row in the table with the
trigger, I get this error:

ERROR:  plphp: unable to register function
"plphp_proc_4947785_trigger"

I've verified that plphp (and plphpu) is installed
with 'createlang -l'.

Any idea what the problem is?

Thanks,
CSN

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