First idea is that the B4 release isn't 100% perfect.
Second, posting in the DS thread would be better since people like me who can really help you out, don't always check the forums for random posts.
Third, minidumps aren't going to help you out at all, you need to turn logging on and look at the log for that game and hope it recorded something worth looking into.
Fourth, pay close attention to the activities you are doing, if you're doing the exact same thing 30 minutes into every game and getting a crash, you may want to change things up a bit... And of course, report it in the DS thread so that we can confirm the crashing behavior and correct it.
Fifth, simply removing the research from the list may not be good enough. You should remove the items from the entity manifest as well, and make sure you get all of them. Remember the Vasari has 2 mines. One that comes with the mine layer, and a second type that is researched.