Below are instructions for deleting the allergens files, which are causing you problems.
The allergens files will be found in your SYSTEMS folder.
1. You should make a backup of your data files before deleting any files.
2. If you’re not sure of the location of your SYSTEM files, run CostGuard > click File> View CostGuard ini file > look at the System = setting.
3. You must close CostGuard if it is running.
4. Erase all files with the name ALLERGENS (regardless of the extension) from your CostGuard SYSTEMS folder.
When you start CostGuard, the files are created again automatically.
Now update to the most current version of CostGuard to eliminate this error in the future.