glamaria wrote:
If I install the expansion on a Mac -with my original game and expansions containing no mods at all- will I have problems?
Yes.
As stated before by several defenders, most games these days WILL have bugs. The severity of the bugs depends on the product.
What I and a lot of other players are doing now is bug hunting, testing and confirming reports coming in from other users of issues that they found in their normal play thru.
You don't have to participate if you don't want to, but it is recommended that if you are concerned about bugs at all to take note of what oddities happen in your game as you play them, and report them when it is best convent for you. Then if it is a new issue, I and others like myself will see what's going on and if we can reproduce the bug on our end.