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This error (see below) is usually caused by the Compact 984 being in "Optimized" mode because the current User Program was loaded by an EEPROM card being in the socket. To resolve the problem you will need to power down the Compact 984, put the Memory protect switch ON, remove the battery if installed and let sit for about 5 minutes before powering back up. This will insure that the Compact 984 doesn't load the program from the EEPROM card and the Compact 984 is in "Dim Awareness".