Memory Cards problem

Hi guys, nice work on the emu!
Now im not new to these forums i come here regularly.

I have one problem with the emu. I can start the bios, everything works there. But when i click on "Browser" to see the memory cards i just get a black screen, like nothing happens. The emu does not freeze but it just sits there counting frames in black screen. So i havent been able to format the memory cards or even see them. My bios version is PAL 39001. Thanks for any help.