The current release of Conversant has expired, and the next version isn't ready yet. In the interim, you can continue running Conversant by installing the updater attached to this message. This updater will push the expiration date all the way out to May 1, 2003.
After downloading, open Frontier or Radio (whichever you are using) and choose the "File -> Open" menu item. Find the file you downloaded, and open it. Confirm that you want to put it at Conversant.utils.compileString, and that you want to replace the object that's already there.
That's it. No need to restart.