rwuxthemes.dll
A solution to start_error ‘The procedure entry point RWResetO2K3Colors could not be located in the dynamic link library RWUXThemeS.dll” is as follows:
I found that the System finds older/smaller version of RWUXThemeS.dll in c:\win\sys32, which has priority by coming first in the path string.
Rename c:\win\system32\RWUXThemeS.dll to RWUXThemeS.OLD.
Copy C:\OrCAD\OrCAD_16.0\tools\bin\RWUXThemeS.dll to c:\win\system32\
****
Adding C:\OrCAD\OrCAD_16.0\tools\bin\ to system path variable will work if it comes first in the path. It is good practice to have the path goto the c:\%systemroot% & c:\%systemroot%\system32 folders first, as so many references are made to these two primary system locations.