As at October 2010, WordPerfect Office X5 will not install on Crossover.
I have tested, using Crossover 9.1.0-1, on Mepis 8.5 (which is based on Debian Lenny, but with a snapshot of KDE 4.3.4 from Debian Squeeze). My tests used various bottles, and pointed sometimes to the cd and sometimes to the setup.exe. In all cases the attempt to install failed.
At present anyone wishing to install WordPerfect on Crossover might try WordPerfect 12, which will install successfully and run reasonably satisfactorily, so as to merit a silver rating.
See also my website, http://www.xwp8users.com, which is mainly concerned with the native WordPerfect 8 for Linux.
Peter Stone,
Advocate for Wordperfect X5