Bol'shoye spasibo, Mr Holodlev (thank you very much, in case I got the wrong language!) That command did exactly what was necessary. It now starts up fine.
Is there some extra dependency then, that the installation procedure of OpenLP needs to be aware of, on Linux?
If it's of any help, I've attached a screenshot of the start-up error I got. (But, just to confirm, the problem is now resolved. Do I need to mark this discussion as 'closed' or 'resolved' or something, now?)
