I am getting the following error while upgrade an EPiServer CMS 5 R2 SP2 site to CMS using EPiServer Deployment Center.
Error - Could not load type 'System.Runtime.Serialization.IgnoreDataMemberAttribute' from assembly 'System.Runtime.Serialization, Version=22.214.171.124, Culture=neutral, PublicKeyToken=b77a5c561934e089'.
Thanks & Regards,
Ashok Kumar Gupta
What version of the .NET Framework do you have installed? Install .NET 3.5 SP1 and try again...