Using WP X6 I cannot insert jpg images (or any other kind). I get the "conversion in progress"" message but nothing happens. Any help appreciated.
In such puzzling circumstances, it is always worth trying a Repair of the program. Ask for a HowTo if you need to.
I have found a link to a possibly helpful thread at WPUniverse - but that site is down until at least Friday for an update.
It may depend on what you mean by "nothing".
If you do not see the expected graphic but you do see five or eight small black squares. then View>Graphics should fix it.