Problem ketika meng-import backup-an *.xml file

Salam kenal!

Tiap kali berusaha mengimport postingan dari blog wordpress lain-q selalu muncul peringatan:
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Before you can upload your import file, you will need to fix the following error:
Unable to create directory /home/a5843968/public_html/wp-content/uploads/2010/07. Is its parent directory writable by the server?

Howdy! Upload your WordPress eXtended RSS (WXR) file and we’ll import the posts, pages, comments, custom fields, categories, and tags into this site.

Choose a WordPress WXR file to upload, then click Upload file and import.
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Bagaimana mengatasinya????????????????????????????