Unable to use Sage_SA.Work.dll in Sage SDK

Sage50 SDK uses this (Sage_SA.Work.dll ) DLL in sample code. Sample code is throwing error about version of this DLL (Sage_SA.Work.dll). 


Nothing changed in Sample Code which is in SDK. It is C# Console app.

 

We have tried these solutions.

Clear & rebuild solution

Refresh all DLL references

 

I need help to resolve this issue.

Thanks in advance