Version 0.62 should now fix the problems with 5th edition. I had to change the volume keys to function as channel changing buttons since 5800 XpressMusic has no other usable buttons. Settings for servers work (they worked before if you changed them, clicked left and then back) and I changed the default colors to white background and black text.
Otherwise it's the same as 0.61 and 0.60, so only 5th edition users have to update.
To type in, you have to click the input line (I know it's a bit small, I'll make it larger), write with the virtual keyboard and press enter on the virtual kb to send it.