Error:

Client payments and refunds table changes format and does not allow edits, as per the below image:Client payments and refunds

Resolution:

You are now able to reset your default settings. Go to Tools > Setup > My Account Details and click Reset Default Settings.
IMPORTANT: Please close all tabs (including start page), so your workspace is clear before doing the reset.
All .xml files under C:\Users[Username]\AppData\Roaming\Tourwriter will be reset to default values.