Koreader doesn't crashes, crashes on exit. and I'm very very happy with pocketbook and koreader

It's only an issue in which it refuses to exit politely, and it leaves an error log...
halve Live using linux has shown me that aesthetic affairs are not so important.
I have a kobo too at home. What is the easy way to install koreader on it?, I'll give it a try...
but I suspect It would have some other glitch anyway.