Dear Maintainers, I get the same problem but I'm trying to install Dashlane (a password manager), a non-listed program (at least I selected non-listed). The program does run after installation but I do still get that error message. After I click 'OK' on the error message, it goes to another dialog which shows 'loading' and seems never to end (it just stays there).
See screenshots for info. I can confirm that Dashlane is actually installed (on the playonlinux virtual drive) but doesn't not appear as an entry on playonlinux. Phil