Hi, thanks for getting in touch.
The issue is that the material libraries in your setup appear to be in a different location relative to the library from the default installation.
In a standard installation the libraries are installed here:
C:\Users\[name]\AppData\Local\Itoo Software\RailClone Pro\lib\default1
And the material libraries here
C:\Users\[name]\AppData\Local\Itoo Software\RailClone Pro\matlib
In your setup I assume the libraries are here (or at least they should be):
R:\DRAWING_RESOURCES\3DSTUDIO\ITOO\RAILCLONE PRO LIBRARY\lib\default1
In which case the materials should be here
R:\DRAWING_RESOURCES\3DSTUDIO\ITOO\RAILCLONE PRO LIBRARY\matlib
And maps should be here
R:\DRAWING_RESOURCES\3DSTUDIO\ITOO\RAILCLONE PRO LIBRARY\maps
This is necessary because the matlibs are loaded relative to the library so the integrity of the original directory structure is important.
I hope that helps,
Paul