We have a custom workflow which works with Sharepoint 2010 and when we are migrating SP 2010 to SP 2013 we are getting the below error "Could not load file or assembly 'Microsoft.SharePoint.Library, Version=14.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c' or one of its dependencies. The system cannot find the file specified"
Can anyone suggest us how to resolve this issue without modifying existing workflow dll's Appreciate you quick response