error(resource_error(stack),trail)

Alan Baljeu <[email protected]>
Newsgroups gmane.comp.ai.prolog.swi
Message-ID <[email protected]>
After running a complex computation and finishing it.  I run another from the command line and I get this error.  I don't know what consumes the trail stack.

It's possible I'm wasting resources, but at the toplevel I expect they'd all be freed.

So two questions: 
1) what might I be doing wrong?
2) Is the system doing something wrong, and can I correct that?
 
Alan Baljeu
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