This is very perplexing (to me at least). I've been compiling a Webkit-Based browser against the nightly WebKit and everything seems to work fine. However, there is a fatal error when trying to load any webplugins (Quicktime, Flip4Mac, etc). My workaround has been to load disabling them into the code and use the Carbon-based ones (.plugin). Anyone worked with the Webkit nightly for this? I have found a few instances of this error floating around the web, but with no solutions. I can post a crash log if anyone would like.