I’m using the awesome Typekit service to embed fonts in my projects these days. I just encountered an error in one of my projects while viewing the site in Internet Explorer (no surprise there!).
After having used the service successfully for months, including on IE, I suddenly started getting the following error when viewing my site in IE:
Error: Invalid Argument on Line 4 Character 91
What I do know is that validating my page at the W3C validator helped me find out I had an unclosed tag. Moral of the story? Validate your pages!!