andrewcroll on "Can't attach file with contact form"

When I select the option to attach a form, no matter what kind of attachment I select, I get a "File format is not valid" error. I get this error with docx, doc, pdf, mpg, and any other extension I have tried.

I have re-downloaded and re-installed the contact contact manager with the same results.

I have the same problem with a Vista and Windows 7 operating system on two different computers.

With no attachment selected the form works as advertised.

I am using the current 3.5.1 version of WordPress.

The URL of the page where I get this error is:

http://quadra.katrinhorowitz.islandnet.com/?page_id=25

Can you help me please?

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