[Cranial]

Memphiz,

Not sure if it helps, but here's my Eden guisettings, "Group movies in sets" option was not visible in settings running Frodo Beta 3.

Here's the freshly created Frodo guisettings where "Group movies in sets" is visible.

[Memphiz]

I would say the eden guisettings was already adapted. I can't reproduce the issue - when using that xml it still shows me the option (and i bet my pants it does the same for you...)

[Cranial]

Hmmm. That's interesting. The option in settings wasn't there until I trashed the guisettings. Oh well, it's working now.

[SchneiderIS]

As a note, I have the same problem moving from Windows 64 bit XBMC 12 RC1 to RC2. I removed the guisettings.xml file and the volume settings came back.