I've successfully used this toolbox for years now, but I'm suddenly stumped. When I open up the dialog box of one of the scripts in the tool box, I get a red X as you can see on the attached, even when using files and locations I've successful used as input in the past. When I hit OK, I get a blank yellow exclamation mark pop-up error before it even tries to run. I installed the toolbox on this computer in 2017, I believe.
I would just try uninstalling and reinstalling the most recent version, but I'm concerned what that could do to the existing network datasets I have saved on my computer, and the transit evaluator associated with them.
Can anyone help with this?