There is x3 nodes in CM6 cluster.
The problem is while using "RTMT | System | Performance".
The folder hierarchy isn't opened and this is relevant only for my PUB (both SUBs work just fine).
After doubleclick occured on PUB folder RTMT change the icon (folder-2-sheet) and returns an error (red color in the status line).
You can freely see it on the attachment I made in second message of this thread.
I've restarted ACM service on my PUB but this didn't help.
Please advice what can be the root cause.