Paragraph tags inserted into src attribute of File Extension uploads

Hello,

I’m having a weird problem with the File Extension. Paragraph tags are being inserted into the src attribute of images I’ve set up to use it:

Here’s the page with this issue:

http://www.asthmacenter.com/index.php/News/

In the right column where the word “Aeroallergens” appears twice, the first instance should be an image, but here is what is being printed in the src attribute:

<p>ragweed_thumb.jpg</p>

The file name is bracketed in p tags, breaking the image of course.

The truly weird thing is that this was working last week! I mean, the file name was appearing without the paragraph tags!

I am using EE 1.6.8.

Does anybody know what is going on?

Thanks, John