Blender 2.58a add-ons not working

B2.58a r 38019; im on Ubuntu 11.04 and when i try to add a add-on i get a black screen with nothing in it to click or select, just the Install add-on and save as default, just redownloaded, but its the same thing; my 2.57 install is ok.

i can click on add an add-on but i get -the add-on is on search path…- error messege.

could this be BUG? i checked the bug report and theres nothing about this, any ideas?