According to the specification "Applications are supposed to use the org.freedesktop.FileManager1 DBus name and the /org/freedesktop/FileManager1 object path. The interface name is org.freedesktop.FileManager1." It would appear that only one provider of this service can be installed?
I notice that Dolphin provides the service under the name "org.kde.dolphin.FileManager1" and Firefox recognises this so a similar name for the Files service may be a solution.
According to the specification "Applications are supposed to use the org.freedesktop .FileManager1 DBus name and the /org/freedeskto p/FileManager1 object path. The interface name is org.freedesktop .FileManager1. " It would appear that only one provider of this service can be installed?
I notice that Dolphin provides the service under the name "org.kde. dolphin. FileManager1" and Firefox recognises this so a similar name for the Files service may be a solution.