I recently ran into the issue where I made some changes to a web part on my BLOG and I was not able to view the page anymore. Since I was not able to view the page, I wasn’t able to fix or remove the web part.
I posted a question on the Microsoft Community Forum and was shown a way to edit the fix the webpart.
There is a way to edit Web Parts on Pages that throw errors – you just add ?contents=1 to the end of the URL and SharePoint gives you the Web Part Maintenance version of the page.
Based on my BLOG URL, I went here: http://office365support.ca/blog/default.aspx?contents=1
Then you can delete whichever Web Part you last edited and then hopefully the page will run as per normal.
Thanks for visiting and reading my posts. I am always looking for more ideas. Please comment or email me with what you would like to see.
Office 365 MVP