I've recently been trying out the Semantic Merge beta from Codice Software, suddenly when I try to use the diff tool (either within Visual Studio or manually from the desktop) I get the following error:
Your license is not valid, you are not able to use the diff tool. Please contact with support.
I've uninstalled and reinstalled, and I don't see a newer version or any updates to the product, and it was working yesterday. Do I need to purchase a license for it, or is something broken on my machine?