Test ride with Musescore Nightly

I wanted to give a try to the coming version so I downloaded yesterday's nightly. I am on Linux Mint 15 Cinnamon on AMD64
The program comes in a tar which contains only a big file of over 100MB. I tried to run it but an error message said it required a lib QT5 file. It was on the repositories of Linux Mint so no problem, actually I had to repeat this part several times until all needed files were installed.
When it finally started I was impressed, due to QT5 it looks different from current stable version and it has a default dark theme (but it can be changed). I liked it anyway. However, giving a closer look at it, its pretty much similar. I played around with it and discovered a new long awaited feature: finally, repeat barlines and end barlines can have a more professional look by doubling the size of the thickest bar, but this must be achieved by changing default settings. Music font can be changed. default is always Emmentaler (Lilypond font) but Goneville (more modern look) can be choosen.
I opened some parts I had created with 2.3. The music is all there but there is some change in the way text fonts are displayed. The instrument name part had a box around it but it disappeared and was not able to recreate it. Changing text font properties requires some more tweaks but it theroetically gives you more control, I say theoretically because though I had checked the "box" property, it didnt work, but I am confident it will soon.
Parts created with new version cannot be opened with stable 2.3 version, on the other hand the nightly opened all old parts without any problem.
I was not able to set up sound. An error message said it was not able to find the soundfont, but when I tried to open the mixer and set it there the program crashed.
However good job guys, now I know the new version will be more than great!
Renato