Facebook Canvas Page not found

Hi all, desperate here.

Ive followed the instructions and set up a canvas page and set up with the latest drupal 7 release for facebook but im getting this error the whole time every time i go to my canvas app page in facebook

Notice: Undefined index: absolute in fb_canvas_url_outbound_alter() (line 341 of /home/###/public_html/myapp/sites/all/modules/fb/fb_canvas.module).
Notice: Undefined index: query in fb_canvas_url_outbound_alter() (line 350 of /home/###/public_html/myapp/sites/all/modules/fb/fb_canvas.module).
Facebook canvas page matches Drupal base_path (/myapp/). This is currently not supported.

There is only a screen with these errors in a red box and a drupal web page saying "Page not found"

Ive done this setup twice on two separate servers and the same error still?

Thanks in advance!

You can ignore the notices,

You can ignore the notices, or get PHP to not display them, until they are fixed.

It's the last one that is a problem. Install your drupal somewhere other than /myapp, or change your canvas page to something other than myapp. Because of URL rewriting, they cannot be the same. (At least at some point in the past it caused problems)