Hello sandervh
two points to note:
A. The BCS does not overwrite hof-files. If you select a hof-file from another bus folder via the BCS, and the bus folder of the bus you are driving already contains a hof-file with the same name, nothing will be copied, but the existing one will be used. If this is then possibly faulty, you will run into problems. In such cases you have to copy the hof-file manually in the file explorer.
B. It is known that the BRT-C2 occasionally has problems with line input or with individual hof-files.
Anyway, I can't see an error in the BCS here at the moment.
However, please try the following:
1. In the file explorer, copy the Grundorf hof-file from the bus folder of the OMSI standard bus (MAN_NL_NG) to the bus folder of the BRT-C2 and then try again.
(The log file shows, among other things, that you copied the hof-file from a vintage bus during an attempt. This may have been a special version for this bus, e.g. for roller conveyors or similar. That's why I always recommend the hof-files to take from the standard buses!)
2. If that doesn't work, please try to take a standard bus to Grundorf and sign it.