No sir. Nothing comes to mind. That's not to say there isn't anything that I could be missing. Something is going on and it seems pretty much confined to me and my little laptop. But everything else seems to work fine. I can use CLAw lite without any problems. I can't run the tool_rail engine thingie directly but I am not sure if you are supposed to be able to. When I open it up and press play it just does nothing. But, the quester closes me out before I even get to that point.
The rail engine is made to be either called or run directly.
For the purposes of the Quester, the rail engine is Called, so you shouldn't even have it in a tab, but it sounds like you know that already.

Judging from your first post, did you get a message like:
"Cannot locate tool_railengine30k.txt" ?
You might want to check and see what the system variable #CURPATH says. Right now I just assume that this is correct, but there might be something strange going on where this is corrupted for you. Make sure this value matches the value of where your EUO is located. If not then you might have to change the variable
%railsubs to have to whole path to the rail file, i.e.:
set %railsubs c:\myeasyuolocation\tool_railengine30k.txt