Unfortunately, that is a bug. Did you install the
patch?
The patch prevents this problem from happening, but will not fix it if it has already occurred. However, you can email your save to support@larian.com, with a description of the problem and maybe a link to this post, to get them to restore that character. If you have any recent saves you can try reloading one after installing the patch and see if it works any better, though the problem may have started earlier than you may wish (or be able) to re-do.
Raze's Headquarters Bug - can't see RazeSee Lar's post
here on how to send them an Xbox save.
With the PC version, in XP the saves are in the folder
C:\Documents and Settings\ %username% \Local Settings\Application Data\Divinity 2\Savegames
or in Vista / Win 7
C:\Users\ %username% \AppData\Local\Divinity 2\Savegames
You may need to set Windows Explorer to show hidden files and folders (
XP, Vista,
Win 7).