What causes this error?

[SAR704]

Thought I'd start a specific thread for this error, since it is very annoying. But anyhow, how do you prevent the TS crash with the message saying saved file to dump?

It comes up when I try to form junctions with my narrow gauge track. What do I do to prevent it and have it render? The track without junctions renders fine, so it must be a glitch with the junction file.

http://s7.photobucket.com/user/SAR704/m ... e.jpg.html