3ds Max :: Unable To Find Any Plug-ins

whenever I try to run Autodesk 3ds Max 2012 with Gamebryo, and I use 'attach to process' debugging with Visual Studio, I get the error message "unable to find any plug-ins at: C:Gamebryo..." in 3ds Max.
 
Then, when 3ds Max opens up and I click on an icon such as Gamebryo Export, Gamebryo Preview, etc, I get the error message " syntax error: at /, expected <factor> in line: "Gamebryo/NiMaxOptions.h"// " in Maxscript. For example, for the Gamebryo-AutoPreview.mcr file, that message shows up on the line

[code]
DoGamebryoView(-1)[/code]

If I then include NiMaxOptions.h in the Gamebryo-Export.mcr file, like below, I get the error message: "syntax error at /, expected <factor> In line: include "Gamebryo/NiMaxOptions.h"//

[code]
macroscript GamebryoExport category:"Gamebryo Tools"
buttonText:"Gamebryo Export" toolTip:"Gamebryo Export" Icon:#("Gamebryo", 2)
(
include "Gamebryo/NiMaxOptions.h"
strFilename = GetExportValue "NiFilename"
GamebryoExport strFilename
)
[/code]

What is causing these error messages to appear?