System 7: Error Type -192 Appears when Removing Fonts

While trying to remove fonts from the System suitcase, a dialog box appears saying that the system is preparing to move them. It also shows the number of fonts. Then this error message appears: "The command could not be completed because a type -192 error occurred."
This error message is being generated because you have a SAM (Symantec Anti Virus for the Macintosh) version earlier than 3.0 installed. This version of SAM recognizes that the System file is being altered, but doesn't know why. To resolve the situation, upgrade to a newer version of antivirus software.
Published Date: Feb 18, 2012