Serviio can't not redraw own window

I have added a folder with some subfolders and ~4K files to the Shared Folders list. After this, Serviio can't re-draw the Library tab.
I see a previous tab controls instead of the Library ones. Other software tab's are redrawing without any problems.
So currently I can't add/remove my folders.
My OS is Windows 8 64bit. Exit/launch Serviio and reboot PC did not help.
Thank you.
I see a previous tab controls instead of the Library ones. Other software tab's are redrawing without any problems.
So currently I can't add/remove my folders.
My OS is Windows 8 64bit. Exit/launch Serviio and reboot PC did not help.
Thank you.