If I am reading the file right, we are on patch 167.
I used the
Full Installer found on the
Download Page and updated from there with no issues.
When I tried to update an old client to current gen I had similar issues as what you describe.
PS. You can check patch version by opening the neocube.file in your RO folder with notepad.
1.) Love the full installer
2.) Haven't played while having music RO in forever, so it is a nice change of pace since coming back.