Problems installing megasync client and mixx

Hello everybody!
I just switched from Ubuntu 18.04 to Ubuntu Mate 18.04.
I tried to install the Desktop client for Megasync cloud and also the mixx dj-programm
(which both worked fine on Ubuntu 18.04)
The packages showed up in GDebi-installer, but when I hit 'install' the window just dissapeared and nothing more happened.

Some help? (Please note that I`m an absolute Linux beginner)

Just tried again opening the packages out of the folder, everything works fine now :slight_smile: