[SMARTY] Debugging custom template resource

I have several custom template resources and I'm having some trouble  
with one of them. I've confirmed that it is definitely getting the  
contents of the template, but between returning the template source  
to smarty and then getting the rendered output back to the original  
fetch call, it's breaking, but I can't get any error messages out. It  
could well be an invalid template, but I'm not getting any kind of  
output at all - everything just stops. You can't log to normal output  
from a template resource function because it's output buffered (and  
all output appears in the rendered template), but logging to a file  
is working ok.
Any ideas for finding the problem or persuading Smarty to generate  
more debug output (debugging = true doesn't help)?

Marcus
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Marcus Bointon
Synchromedia Limited: Putting you in the picture
[email protected] | http://www.synchromedia.co.uk

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