System.ArgumentNullException: Value cannot be null. Parameter name: key

If you receive this error message when trying to start Readysell:

This typically indicates that your local copy of Readysell has some invalid cached type data. To clear your cache, please follow these steps:

1. Right click your Readysell shortcut

2. Click Open file location

3. Find "ModelAssembly.dll"

4. Delete this file

5. Double click your Readysell shortcut again