Im sorry to tell you that i will have to delay this weeks release , im currently redoing pretty much the whole Viewer to bring it up to date with the most recent Linden Shining release and hopefully working!
you can watch the redo here:
Nirans Viewer - Shining Fixing Repository
It will most likely contain even more bugs than the previous release and if i dont find a fix until release alphas might bug a bit sometimes.
But i´ve heard some reports about certain features like the land objects panel not showing anything , or grabbing in mouselook beeing on by default , preventing you from shooting , i will hopefully get around to fix them before next release , until then you have to wait and see!