Corel has released a fix for WordPerfect X5 with Service Pack 2.

Here’s the description of the fix:

   This Hot Fix applies to WordPerfect Office X5 Service Pack 2 (build 15.0.0.505) and updates a single file to version 15.0.0.506: PrintServer150.exe.
   This Hot Fix corrects a problem introduced in Service Pack 2 with printing (and publishing to PDF) certain documents—specifically, documents that contain all- or full-justified lines without printable characters.

The patch page and download are here:
http://www.corel.com/servlet/Satellite/ca/en/Content/1157481830100?pid=1311364116484