Never heard of this program before you mentioned it but took a quick
look. They only have a FC1 version that does give the error you mention.
If you have development tools installed on your system you can grab the
source rpm from:
http://www.krasu.ru/soft/chuchelo/download.php3
and use this command to rebuild a new installable rpm that should
work on FC2:
rpmbuild --rebuild d4x-2.5.0rc3-1.src.rpm
This (d4x) is on FreshRPMs for FC1, so might well end up being available
APT-able for FC2 soon. Maybe that will solve the prob if the src.rpm
route doesn't work out. I'm waiting for it myself.
ralston