Sorry I can't really post the code or data because it's too complicated

Please see Short, Self-Contained, Correct Example. It should be possible for you to compose an SSCCE because you must have some idea of the parts of the text that are causing problems. Just the exercise of composing an SSCCE may give you insight into the root cause of the problem.

Give a man a fish:  <%-{-{-{-<

In reply to Re^3: Fatal code point 0xFFFFFFFFFFFFFFFF by AnomalousMonk
in thread Fatal code point 0xFFFFFFFFFFFFFFFF by Anonymous Monk

Title:
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