[TYPO3-ttnews] news category not visible

[robert baumgart]

hi list!

i installed TYPO3 4.0 and tt_news v2.2.41 and need categories.
the grsp is set, if i make a new category it is show in the right 
sysfolder, catmenu works too.
but when i make a new news in the BE-form and click the tab "relations" 
i see no categories, only in the sourcecode! so i can't select anyone.

can anyone help me?

thanks,
robert