System.ComponentModel.INotifyPropertyChanged error

[kent.campbell]

I am in the process of upgrading a project from iX 2.0 to iX 2.2 and I am getting the following error:

The type 'System.ComponentModel.INotifyPropertyChanged' is defined in an assembly that is not referenced. You must add a reference to assembly 'System, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089'.

I tried adding System.dll to the Referenced Assemblies. Adding it in causes a BUNCH of extra errors to be thrown (mostly "exists in both" type errors).

Anyone have any idea what I need to do?

[Jae V]

Hello,
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