Trying to rebuild
http://arklinux.org/~bero/kdelibs-4.1.0-0.822040.1ark.src.rpm
with rpm 5.1.3 results in

error: line 106: Package does not exist: %description -n kimgio-exr

However, line 100 of the spec file does define that package unconditionally.

The same package worked with older rpm versions.

ttyl
bero