Hi Guys,
I have a question about Groups in community edition of Kentico 4.x
I using portal version.
When i am adding GroupMembersViewer web part on my page i need to add Group Name

in documentation i found that i need to set (current group)
i am trying

but after press Save, and then Ok for save web part settings i've got next error

So look like value is not inserting in Drop Down or i am doing somthing wrong.
Please show me the correct direction.
Thanks