With Leap 15.2 and earlier I used opencpn often. I use it with charts from o-charts.org and the oesenc plugin.
Currently I have Leap 15.3. I forgot to upgrade the opencpn repository,which was still at Leap 15.2, but opencpn worked fine and the encrypted charts could be used.
Last week I bought new charts. After downloading unpacking and initialising, they did not load. As the o-charts.org website indicated to check that the latest oesenc plugin is installed, I updated opencpn by chnaging the repository to 15.3
Opencpn 5.0 0 Download