Image handler causes some product pages (or page of products displayed in a grouping) to display a blank page.

Some newly added products display a blank page and some that have been around a while. There does not seem to be any rhyme or reason to which products generate a blank page. But it's not random in the sense that a product will display one minute and then not the next. If I uninstall IH then I get no blank pages. Another interesting thing was I had a customer that had a cart with one of those products in it and clicking on the cart would throw a blank page.

My cart version is 1.3.7. Mods installed after are the sql injection security patch, an SSL certificate, verification display, Super Orders, and the Invoice mod.

I looked at the steps on the troubleshooting blank pages and none of that really helped - when I installed the debug error log utility I got an http 500 error.

Any suggestions would be greatly appreciated.

-T