emdsd90mac wrote:the signal at the opposite end of the track I am diverging from should turn red. Is this correct?
Yes, this is correct and as far as I know RW generally does that too.
Does the issue persist after starting a new session (or restarting the scenario) after making the changes to the links and/or tracks? Usually you should exit to the main menu and restart the scenario after doing any changes in either the route or scenario editor to avoid the signals misbehaving.
If the issue persists after reloading though it's probably a faulty link placement. Could you post another screenshot that shows the links of the four signals?
Cheers
Michael