When first generating the sitemap after installing the Google XML sitemaps plugin, the screen stayed white for a very long time until I had to restart. Now, when clicking the manual rebuild link, I get the message 'There was a problem writing your sitemap file. Make sure the file exists and is writable'.
I have followed the steps in the faq and deleted the original sitemap.xml and sitemap.xml.gz files and replaced them with empty text files saved with those names, and changed the permissions as per the FAQ. However I'm still getting the message. Any thoughts on my next step?