Tried installing on an earlier version of WP (3.0 I think) and only got a blank screen when using the plugin. Turned of all other plugins and still no luck.
Upgraded to WP 3.1.1. and now the plugin generates two errors. Here's the first:
Warning: include_once(MYSITE/wp-content/plugins/wp_export/admin_bulk.php) [function.include-once]: failed to open stream: No such file or directory in MYSITE\wp-content\plugins\wp-export-all-post-information-excel-format\wp_export.php on line 60
The MYSITE is my site's directory.
Too bad - this sounds like exactly what I need.