Trust accounting year-end processing error

I am getting the following message and I am unable to run Year-End Processing.

To fix this problem follow these instructions:

• Click on the Setup > Settings menu option.
• Select the Modules tab.
• Tick the Allow cashbook entries direct to Asset, Liability & Equity (Trust Accounting) box.
• Click on the OK button.
• You should now be able to complete end-of-year processing.