TLB freezes under Windows 8

Hi,

I have a problem using TLB (actual 6.4) under Windows 8 Pro (32-bit, German).

Again and again (but not daily) the whole desktop is hanging in the
moment when I want to select an entry out of the TLB-sorted menu. The whole TLB menu area is complete frozen. I can even close and handle all other active open programs, but in the taskbar, they are even displayed even after I close them.

After them, I have to kill the desktop process of Windows and have to logon new to Windows, then I can continue working.

Any ideas for this strange behaviour?

Daniel