The steam version of the VRC U30C has had an issue in which the throttle won't move if you play the game in 64bit mode. This has made an otherwise very good locomotive, unusable unless you're ok with only running in 32bit mode.
Well, there is a fix for this issue. Just follow these steps:
1. On the Railworks America homepage, click on "File Library" and then "Models" and then do a search in the upper right corner for ( RW&A GP40 and GP30 slug unit ). Or try following this link; (
http://www.railworksamerica.com/index.p ... ide-addons ).
2. Download and install the ( RW&A GP40 and GP30 slug unit ). It will install into VRC/RWA-GP40-01.
3. Now, go into the following folder, "VRC/RWA-GP40-01/LuaLibrary", and copy the file "CommonLib-1.1.out".
4. Paste this file into your "VRC/U30C-Series_01/LuaLibrary" folder and when asked to overwrite, say yes. ( Please backup the original file first, just in case!!! )
5. Make sure to delete the file, "Blueprints.pak" in both your "VRC/U30C-Series_01" folder and the "VRC/RWA-GP40-01" folder, if there is one there. ( Don't worry, the game will make a new one once you start the game. )
6. That's it! You should now be able to run the U30C in 64 bit mode with no problems now.
I hope this helps,
Wopflyer