My website is doing the google dance

[mbmk]

So I've been working on my website but ever since I submitted my sitemap to google, my website seems to be dancing. It goes from page to 16 back to 8 and now to 12 again.

One thing I did not have was the robot.txt which I uploaded last night. It seems like I have 91 crawl errors so far. All 404

I've made some changes to URL. Like from about.php to about-us.html for example.

What should I do to fix this?

I also did "Fetch as Googlebot" and did "URL and linked pages submitted to index" just now.

My website is www.mokaziphotography.com

[Hawklands]

If you have been changing the urls AFTER submitting the site map... that will be the 404. You need to arrange 301 redirects otherwise Google will penalise your site to a degree for "content being unavailable".

This clears up after time though, Google will remove the faulty links and use the new ones instead.