When I got into edit mode in cartwall and click on a cart to edit, I get the following error message:
Could not load type 'System.ValueTuple'2' from assembly 'mscorlib, Version=126.96.36.199. Culture=neutral, PublicKey Token=b77a5c561934e089
I'm running the software on windows 10 pro fyi.
Please ensure you have applied the latest Windows 10 updates and then ensure you have .NET Framework 4.7.1 installed: https://www.microsoft.com/en-us/download/details.aspx?id=56115
Thank you so much. Windows Update was the fix :)