Jordy sometimes this happens to me. It happens only to me at this situation:
1. When developing forgotten to put stop command
2. BVE TS unable to run due to large amount of computer "energy" used.
3. Load the routes till half way then suddenly change of route may sometimes result in this.
P.S Additional infomation to Situation 2. This thing happen example running Window Media Player, and lots of software and applications that used are lots of computer "energy".
This are all my experience in getting this error. But who knows he may have a totally different situation.
Regards,
LondonBVE