_PDFCreator.cIsPrintable always False with COM?

Trying out COM integration into my VS.Net project, and I’m looking at the samples.
I had to convert the project to VS 2010 since I don’t have VS 2005.
For sample 1 I tried picking a TIF file and got a false result.
Then I picked a TXT file, same result.

Is there a setting that I may have missed in converting to the version of VS I have?

Sorry, this was supposed to be a question, not a discussion…
Though, if you have the answer, discuss!