Help:VE137
From TrainzOnline
Empty or invalid running number specified at character index index
A running number specification was included in the running number tag which could not be parsed into a valid number or range of numbers.
For example:
vehicle-running-numbers { running-numbers "862-863," }
resulted in the error
- VE137: Empty or invalid running number specified at character index 8
The index is the zero-based position in the string at which the parsing failed. In this case the comma indicates that an additional specification is to follow, but it has not been included.