Just noticed this php error that we've been having. It occurs every time a post is published. Any idea on what the cause is and how it can be fixed??
PHP Warning: fopen(/xxxx/xxxx/xxxxxx/wp-cron.php/sitemap.xml) [function.fopen]: failed to open stream: Not a directory in /xxxx/xxxxx/xxxxx/wp-content/plugins/google-sitemap-generator/sitemap-core.php on line 1623
[13-Jan-2012 05:05:02] PHP Warning: gzopen(/xxxxx/xxxx/xxxxxx/wp-cron.php/sitemap.xml.gz) [function.gzopen]: failed to open stream: Not a directory in /xxx/xxx/xxxxxx/wp-content/plugins/google-sitemap-generator/sitemap-core.php on line 1636