Block Manager not showing up, its tab displays "[…] Container is empty"

I found one old reference to the problem, apparently it hasn’t been resolved.

“‘Right Container’ Container is empty” is shown inside the block manager tab (on the right).

At first it happened only in some Rhino windows (files), I thought maybe high number of blocks in my document was to blame. This is a new file with only a single (top level) linked block pasted and the bug showed up already as well.

Hi -

The person in the thread that you refer to fixed this by doing a “clean install” of Rhino.

What happens when you disable all 3rd party plug-ins, run WindowLayout and restore the default layout?
-wim

The behaviour is very unpredictable, just after posting this, I opened the same file again in read-only mode by accident, and then a larger working file as well. Block manager suddenly worked in both windows. After closing all Rhino instances and reopening something again, it did not work again.

AFAIK I have only two plugins: VisualARQ 3 and this one from Epic Games (installed only today, while the bug started earlier), I can check it tomorrow.

My install is only about three weeks old!