Just becuase it freezes at the same point over and over again within the same save does not make it repeatable. I don't mean to split hairs here, but claiming that something is repeatable implies that the programmers could load up their program, do exactly what you describe and have the test fail. In this case, exactly what he tried was 'clicking next turn' which doesn't happen for all instances of clicking next turn, and thus does not qualify as repeatable. In fact, repeatable in this report context only means that it is repeatable on your machine, so even if everything is done the same, it might still work on the programmers computers with different specs. That doesn't make the bug report useless or anything, just be careful about the terms you use.
The following excerpt might be helpful in posting good bug reports:
http://www.chiark.greenend.org.uk/~sgtatham/bugs.html
The section on 'I did it a moment ago' explains the difference between an intermitent fault and a repeatable one. (Mind you that most errors are repeatable - tied to some logic or other - but, without the information on how to repeat it, terming it as such can be misleading). Also it's somewhat prudent to shut down and restart your computer before confirming that something crashes every time you do something, as it might be due to a memory leak (from this or another program).