Could not enable core release source

In mageia control center I'm trying to check core release source, but it returns some error, that md5 mismatch and doesnt activates.
Rest of the sources can be added and activated.
When I try installing softwares from terminal, I coudnlt because core release is missing
Rest of the sources can be added and activated.
When I try installing softwares from terminal, I coudnlt because core release is missing
- Code: Select all
[root@localhost phanindra]# urpmi vlc
unable to access synthesis file of "Core Release (distrib1)", medium ignored
No package named vlc