Sorry to hijack the thread, but I had something to add.
After installing K2 in two sites of mine I noticed that the admin menu item was labeled com-K2 and each submenu item also had the com- in front of it. When clicked I also received the white screen of death.
After searching on the forum last night I found this thread. I got a chance to tinker with it more today.
I searched the plugin manager for "k2" and disabled all but one of the K2 plugins. Then refreshed the admin control panel page on the site in between re-enabling each one of the plugins. The menu items and sub items returned to their normal appearance and no longer give the white screen after clicking. All of the plugins are enabled now and it appears to still be working...

Knock on wood.

Dustin

Hello Dustin,

Thank you for sharing your findings :)

Hi Dustin, Happy to hear that it is working for you now! :) this problem made me pull my hair out!

Guys on this forum are so helpful, Krikor is one of the decent guys that you will always receive a reply from :)

I am getting super busy now but I will try to be on the forums more often :'(

Thanks :)