First, just to be sure, download the latest version of TimeNet Law. There have been a couple of updates recently. You can get that here: http://www.applesource.us/pub/bin/files/timenet_law_1.zip
Next, be sure your Aged Invoice Markup is set to 0. If this is set to 0, no late fees will ever be applied.
A future update will refine the late fee process a little more, showing you which invoices are about to accrue interest and allowing you to check them off before applying.
You can manually remove late fees by opening the Matter, selecting "Edit Late Fees…" from the Matter menu, and setting the "# of Late Fees" to 0 for each invoice that has been marked up.
If you have many matters and invoices, and doing this by hand is not practical, please send an email to email@example.com
and I will work on an option to automate the removal of all late fees for you.
If you have any questions, please let me know!