Created attachment 114234 [details] Mageia 6 Control Center Software installation dialog. I mistakenly added a comment on a bug under an installation of Kile. Bug number 313266. The attachment shows detail for khelpcenter on my laptop. The orange arrows say it is installed but the bug is still there. I included the MCC error message on non-installation and an lspcidrake -v
It is a packaging issue that should be reported here: https://bugs.mageia.org/ Thanks for your patience and sorry for inconveniences. KDE developers cannot do much in this case.
The other bug is unrelated, and the logs that you pasted there, which should have been pasted here, shows that you have a mix of repositories from different versions of Mageia which are probably causing also other issues.