abcpdf 8 .net throwing unhandled exception in w3wp process

I'm trying to use ABCPDF.net 8 to create a pdf from html content.

When using the method AddHtml, this works fine.

However, I need to take in the styles too, so I need to use AddImageHtml. But using this method causes the w3wp process to throw an exception. When I debug through the code with Reflector the exception seems to come at different places, making me think it is maybe some kind of memory thing... (nice and specific, I know).

My abcpdf code is as simple as...

global::WebSupergoo.ABCpdf8.Doc doc = new WebSupergoo.ABCpdf8.Doc();

doc.AddImageHtml(test);

...and I'm doing this in the page render.

Any one had any experience of abcpdf throwing ge开发者_JAVA技巧neric exceptions in the w3wp process?

I think this has something to do with the fact that I have IE9 installed - when I switch abcpdf to use the Gecko rendering engine, everything works...