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Whenever I fly around in this particular route, TSRE seems to not like some tiles. See attached log file for example. Also, I think there should be a tutorial on examining/translating/decoding etc. log files. I can't make heads nor tails of what I'm supposed to be looking for; I am not a coder, though I do understand html.
Thanks in advance.

After getting no responses, I decided to just chuck the whole Tile folder and start over with the markers as a guide. New terrain is in place, but this needs some sort of solution, as I can't be the only person to experience this in route building. The program shouldn't just crash whenever it wants to.