I have just installed newest version of plugin but I have 2 problems (this 2 problems were also on 7.5.7 version):
When I sharing link on Google+ it repeats page title two times. I don’t have this problem if Open Graph Integrator is disabled.
Second problem is when I create new category with Permalink Tweaker enabled, I get 404 error on new category. With Permalink Tweaker disabled I don't have this issue.