Import not working at all…

good day,

i’m trying to import stuff from a previous wp install, but when i click on the import tab, absolutely nothing is listed. it simply says…

“If you have posts or comments in another system, WordPress can import those into this blog. To get started, choose a system to import from below:”

and then the rest of the page is blank. nothing is listed like here: http://codex.wordpress.org/File:manageimport.png
export works, but import is broken.

i am using wp version 2.9.2 and have tried deactivating all plug ins and using the default theme.

what is causing this and how can i fix it?

thank you!