[Therion] Scrap is too large to process in metapost in this scale

I am working with a th2 file generated from the inkscape export plug-in. This file contains a few scraps. If I try to create a pdf from just one of the scraps in the file then I get the follow error: error -- scrap spEntSeries@Riano defined at RianoEntPlan3a.th2 [6] is too large to process in metapost in this scale -- maximal scale for this scrap is 1 : 830753 My scrap is not that large. I found that if I delete all the other scraps from the th2 file so it only contains the single scrap then the pdf generates fine. I've attached the full log file. Any ideas what is going on here? Footleg