Forms not working after upgrade from 2010 to 2013

[Chris Bolton]

Hello

We've found that some of our forms post an upgrade from SharePoint 2010 to 2013 are broken. We're seeing when we open a form on either edit/new or display:

Web Part Error: Could not load type 'FormsDesigner.Sharepoint.Entities.Forms' from assembly 'FormsDesigner.Sharepoint, Version=2.0.0.0, Culture=neutral, PublicKeyToken=1c140246cb6fd531'. Correlation ID: f016419e-4a0a-2017-c991-976ff87e849f.

This is at the top of the form, beneath is the SharePoint native form. Obviously there's some full assembly path embedded in the form xml we need to resolve. This is fixed by going to designer and saving the forms. However we have 1000's of these forms in error and was wondering of there's a better approach?

Many Thanks

[Nikita Kurguzov]

Dear Chris,
Unfortunately, re-saving the forms is necessary for them to start working. Updating from 2010 to 2013 is a 3 step process:
1) You need to completely delete Plumsail.FormsDesigner2010 solution
2) Install Plumsail.FormsDesigner2013
3) Then re-save all custom forms in the new editor.

The process is quite simple, yet I understand that it will be very time consuming with 1000's of forms, but I can't offer an easier alternative, sadly.