Patch crashes in Max6, not in Max5 - Bug?

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Hi,
Hereby is a patch which crashes after approx. 6h in Max6. it gets temperature Data from a specific Website and writes it in a coll. The coll its continuously written on HD to keep the data in case the patch crashes.

The same patch runs without problems forever in Max 5.

Thanks for hints and help

4572.Meteo24WaveofrefugeesTunis.maxpat
Max Patch