Uninstall from Sharepoint2007

Sep 11, 2013 at 7:45 PM
I am trying to migrate to Sharepoint 2010. I need to uninstall this web part to do that. I have removed the web part from the page it was on. I then retracted the solution in Sharepoint. As soon as I did that I could not longer access the page, the error coming up is:

An error occurred during the processing of . Could not load file or assembly 'CalendarWebpart, Version=, Culture=neutral, PublicKeyToken=645f0ffd8949f7b3' or one of its dependencies. The system cannot find the file specified.

Is there an uninstall sequence I should be following?
Sep 11, 2013 at 7:51 PM
Are you sure you deleted the web part from the page and not just closed it?

You could also try to open the page in maintenance mode and remove the web part.
Sep 11, 2013 at 8:00 PM
Yes, I did click on edit page, then edit on the web part and chose delete from the drop down.

I actually had to deploy it again to get going. so now the solution is deployed but I have not added it to the page. If I go to the maintenance page it's not listed which is what I expect.
Sep 11, 2013 at 8:15 PM
I have an old version, would upgrading to the latest help?