10.6.1823.0 makes Visual Studio 2010 crash on startup (reproduced with the Ultimate edition, not sure about Professional), when AppVerifier is enabled (with the default basic tests). The crash itself is invoked by AppVerifier on one of its handlers.
Using the contact form, I was able to get in touch with Mark to whom I also provided a full dump with the heap. It got registered as case 45210. I just thought it would be best if I bring this to your attention to prevent duplication of this bug.