Originally Posted by falko
The file io.h is missing, so you must install the package that contains that file (maybe yast can help; it could be libc6-dev that is missing).
Did you follow the "Perfect Setup" fro SuSE 10.0 on HowtoForge?
I have SuSE 10.0 OSS for x86_64 from a SuSE mirror made in a iso DVD.
I have choosed the text-only instalation (this is for a server) and then toroughly made every single step installing the recomended packages trough yast.
I had no problems whatsoever in that install.
When installing ISPConfig 2.2.0 the error mentioned above arrised.