Can't add Apps

[MartinX3]

ScudCloud Version

Paste the output for scudcloud --version below:

ScudCloud 1.65
Python 3.5.2
Qt 5.5.1
WebKit 602.1
PyQt 5.5.1
SIP 4.17

Distro and Desktop info

• Distribution: Linux Mint / Ubuntu
• Version/Release: 18.3 / 16.04
• Desktop environment: Mate

Expected behavior

Install Apps

Actual behavior

I click on install / manage apps / show app directory, but nothing happens.

Steps to reproduce

1. Click on "Add Apps"
2. click on install / manage apps / show app directory