Error message after changing the background image

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Anita

Error message after changing the background image

Hey,

I changed the background image (the various shades of gray - the sqare boxes, noise, etc), and I'm now getting an error on the front page and all pages that use it -

Notice: Trying to get property of non-object in dawn_preprocess_views_view() (line 269 of C:\wamp\www\sites\all\themes\dawn\template.php).
Notice: Trying to get property of non-object in dawn_preprocess_views_view() (line 269 of C:\wamp\www\sites\all\themes\dawn\template.php).
Notice: Trying to get property of non-object in dawn_preprocess_views_view() (line 269 of C:\wamp\www\sites\all\themes\dawn\template.php).
Notice: Trying to get property of non-object in dawn_preprocess_views_view() (line 269 of C:\wamp\www\sites\all\themes\dawn\template.php).

And here is line 269: (I'm not familiar with what this code would do)

if (theme_get_setting('portfolio-background') != '') {
$portfolio = '#masthead { background: url(' . file_create_url(file_load(theme_get_setting('portfolio-background'))->uri) . ');}';

But let me tell you what I "might" have done to cause this -

I only I made changes to remove the author/date/tags/image fields from the blog summary page view, and that's all I worked on since before this happened. And also I changed the video of the slide to a literal lath image instead, which shows up fine.

Any ideas?

(Sorry)

- Paul
(for Anita)