RIM just released an updated BlackBerry 10 WebWorks SDK but they have just refreshed it yet again. They found that there were two issues in the go live version with code signing issues reported on Apple Mac systems along with config.xml issues with more than one unsupported <feature> element.
This new v188.8.131.52 SDK should help out people running into those issues. I know I heard about the Mac issue so its nice to see RIM jumping ahead of this one and posting it on the DevBlog. Check out the new BlackBerry 10 WebWorks release here.