I don't know if you tried putting "eval fork" in the search box at the top of a PM page to see what nodes would come up, but I recall a recent node where someone else wound up in a situation where fork was being called from within an eval block. It's too late at night here for me to figure out whether that case is relevant to yours, but it may be worth a look...

In reply to Re: eval and fork: [bad?] magic by graff
in thread eval and fork: [bad?] magic by mhoulist

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