A significant bug was introduced into the Dungeon Fantasy 9: Summoners data file which will cause GCA to crash if you attempt to load any of the character templates.
Here's a link to a zip file with a replacement data file. You can unzip this into the install folder and replace the existing file, since in a future update this file will replace the currently bugged one.
http://gurpsland.no-ip.org/GCA4/FixedFiles.zip