If you are using Adsense on your wordpress blog then you might be facing this problem. You must be getting these crawl errors in adsense account settings. These crawl errors are mostly caused due to the post preview feature of wordpress. Check the images below, these are the crawl errors i used to get :
How to fix Adsense Crawl Errors ?
To fix these adsense crawl errors on your wordpress blog, you will have to edit your robots.txt file of the site. The robots.txt file basically tells the crawler which pages to crawl and which not to.
You will just have to add this extra line in your robots.txt file :
So your file will look like this now :
This will fix your adsense crawl errors. That’s it. My robots file is located at http://codefap.com/robots.txt
If you are not familiar with editing the robots.txt file then you can use PC Robots WordPress Plugin.