I have an app that integrates with Sage 50 2014 version and posts invoices and bills using the Sage 50 2014 SDK. My client has upgraded to Sage 50 2016 Pro, and I have purchased the Sage 50 2016 SDK and updated our Sage 50 DLL files.
However, my application is unable to open the company file. I get this error message. [BTW, we are able to open the sage 50 2016 Quantum file!]
We will give Team Viewer access to our environment. All you need to do is see and fix the problem - which is why we are happy to accept a fixed bid! If you know your stuff, you'd be done in minutes.