On Unbuntu 17.10 I attempted an install of viking-gps through Ubuntu Software Center. At the end, it indicated a failed install, mentioning something about a dropped connection.
The app is damaged and will not run. A couple of methods to uninstall haven't worked. The app doesn't show up under the "installed" tab in the Ubuntu Software Center window and it doesn't show up with dpkg --list.
When I do a search in Ubuntu Software Center, the program is still found, but when I click "Install" it refuses to reinstall saying the program is already installed.
How I got it from the software center: In the dock on the left of the desktop there is an icon that looks like an orange shopping bag with a big capital "A" on it. I click on that. On the window that pops up, there is a looking glass in the upper right corner. I click on that and type in "viking" to the search term entry box that appears at the top of the window. An icon for viking-gps appears along with a title and an "install" button. I click on that button to install
What is the best way to recover and install a working program?
There were a number of messages mentioning snap and snapd, but I don't understand those at all.
After a number of tries, it did install, but it would fail with the message: "Desktop file didn't specify Exec field"