Wiki uploads are broken

[hen7713]

When I try to upload a file to the wiki, i get this:

Internal error
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The upload directory (public) is not writable by the webserver.

[AriX]

Should work now, sorry about that.

[hen7713]

Now when I try to upload something, I get this:

Internal error
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Could not rename file "public/2/2c/Ad_-_Prevue_Grid.png" to "public/archive/2/2c/20101114092531!Ad_-_Prevue_Grid.png".

and

Warning: mkdir() [function.mkdir]: Permission denied in /home/ninjastar/public_html/prevueguide.com/includes/GlobalFunctions.php on line 2012
Internal error
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Could not create directory "public/archive/a/a6".

[AriX]

Whoops. Looks like server permissions got more screwed up than I thought when I switched servers a few days ago. Try it again.