Hi everyone!

I think I did a bubu. I wanted to install something that needed root permission...so I googled it and found out how to install it through root. Only after that I realised what I had done:

Now when I try to run updates I get this error: Executing usr/sbin/synaptic '--hide-main-window' '--non-interactive' '--parent-window-id' '37748739' '--update-at-startup' as root user has failed.

When I try unlocking the "user and groups" I get this error: "An unexpected error has ocured"

Plus, I can't do much...it seems I don't have anykind of permission now...I think this is all because I did that sudo thing.

What should I do next? Is there a way fixing it without having to reinstall?

Thank you guys!