VDT2 documentation

I recently installed the XOP toolbox in Windows 7 and compiled and built the VDT2 XOP in Visual Studio 13. Igor (v6.4) recognizes the commands in the VDT2 XOP from the command line, but the help files report, for example, "VDTWriteWave2 operation is supplied by the VDT2 XOP. No further help is available." How do I access the documentation? The same problem popped up as I went through the Guided Tour with the SimpleFit XOP: no help files loaded. Is this a VS version problem? Thoughts? And, is there another route to accessing the command documentation?
Thanks.
AP
From Chapter 13 of the XOP Toolkit manual:
Quote:
When Igor needs to find an XOP’s help file, to display help in the Help Browser, for example, it looks in the folder containing the executable XOP itself. The sample XOPs use a folder organization, described in Chapter 3, which puts the executable XOP in a development system-specific subfolder. The help file is at the top of the sample XOP folder hierarchy, usually one level up from the executable XOP. You can make Igor find the help file by putting an alias (Macintosh) or shortcut (Windows) for it in the same folder as the executable XOP. The alias or shortcut must have the exact same name as the help file itself.