The upcoming release of EVE (Incarna, due to be live later today) will have trouble connecting with the game servers in Crossover Games.
We've pushed a patch for this issue in our "nightly builds", which are the experimental builds that have all the latest-and-greatest patches but also tend to be unstable. If you have access to the nightly builds, already, you can feel free to try out the latest with the Incarna client.
If you don't have access, or would prefer to wait, we'll be checking the nightlies with Incarna later today/tomorrow morning to make sure it won't utterly destroy your Crossover configuration. Once it gets the all-clear, we'll post instructions on this forum for acquiring the build in question.