There is a minor bug in Release 18.1.0.0. This release was available online for a few hours on January 23, 2018. It only affects people who upgraded to that version at that time. It does not affect users who upgraded to 18.1.0.1 or later from 17.4.0.1 or earlier versions.

The bug generates error messages when Instant Interest finds an update to apply and displays the Internet Update panel and the user clicks OK:

To avoid error messages, click Cancel and then click on the Update button on the main Instant Interest input form.

This bug only affects people who applied the 18.4.0.0 update for the few hours it was available. The bug was introduced in 18.4.0.0 and was corrected in 18.4.0.1.