I have a train with the following schedule:

Station: Depot signal (no wait condition)
Station: Pickup (Wait for full cargo)
Station Delivery (Wait for empty cargo)
Station: Refuel

The delivery stations are train-limited and usually fully stacked up.
The intention of this setup was that the train is in the depot until there is a pickup station available.
Then the train should wait at the pickup station until a Delivery-station becomes available.
After that it should check for refuel and go back to the depot (or go to pickup if one is active).

What actually happens:
The train goes from the depot to the pickup, detects that there is no available delivery and then goes back to the depot (supposedly skipping the Delivery stop).

Right, logic error on my side, should be fixed

Thanks...I'll try it out right away.
Being a .NET-developer myself I think I found the bug in the lua script already but I'm not firm enough in lua to actually find the solution :)

Ok...thanks again...works like a charm now :)

Here is another case with problem:

Station: Depot signal (no wait condition))
Station: Pickup (Wait for full cargo)
Station: Waiting to free pickup station (no condition)
Station Delivery: (Wait for empty cargo)

The conditions are the same as previous ones.
The trains should wait at the Waiting station until there is a delivery station available.
All stations are train-limited.

What happens: At the waiting station, the train goes directly to the depot when there is no delivery station available

I have tried a fix on the mod. I replace the line 76 in the file "train_control_signals.lua" with

local prev = schedule.current - 1
if prev == 0 then prev = #schedule.records  end
local prev_name = schedule.records[prev].station
return prev_name:find(depot_signal)

It seems to work

Hi Sorry for hte problem, It was a over zealous fix to another problem, it should be fixed now

It works. Thanks.