5.7 AP lockup. Please help. Line 673 FatalError.

I keep getting this error in the event logs. Line 673 FatalError. Any ideas? Thanks.

16:16:08 UT : 01/08/01 : File root.c : Line 941 System Startup
16:16:08 UT : 01/08/01 : File root.c : Line 946 Software Version : CANOPY 7.3.6 Oct 24 2005 12:06:56 AP-DES
16:16:08 UT : 01/08/01 : File root.c : Line 950 Software Boot Version : CANOPYBOOT 3.0
16:16:08 UT : 01/08/01 : File root.c : Line 956 FPGA Version : 070605
16:16:08 UT : 01/08/01 : File root.c : Line 960 FPGA Features : DES Sched
17:15:30 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/fpgaapi.c : Line 673 FatalError()
17:09:29 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 1062 Time set
17:09:29 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 918 System Reset Exception – External Hard Reset WatchDog
17:09:29 UT : 01/08/01 : File root.c : Line 941 System Startup
17:09:29 UT : 01/08/01 : File root.c : Line 946 Software Version : CANOPY 7.3.6 Oct 24 2005 12:06:56 AP-DES
17:09:29 UT : 01/08/01 : File root.c : Line 950 Software Boot Version : CANOPYBOOT 3.0
17:09:29 UT : 01/08/01 : File root.c : Line 956 FPGA Version : 070605
17:09:29 UT : 01/08/01 : File root.c : Line 960 FPGA Features : DES Sched
18:08:51 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/fpgaapi.c : Line 673 FatalError()
18:02:31 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 1062 Time set
18:02:31 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 918 System Reset Exception – External Hard Reset WatchDog
18:02:31 UT : 01/08/01 : File root.c : Line 941 System Startup
18:02:31 UT : 01/08/01 : File root.c : Line 946 Software Version : CANOPY 7.3.6 Oct 24 2005 12:06:56 AP-DES
18:02:31 UT : 01/08/01 : File root.c : Line 950 Software Boot Version : CANOPYBOOT 3.0
18:02:31 UT : 01/08/01 : File root.c : Line 956 FPGA Version : 070605
18:02:31 UT : 01/08/01 : File root.c : Line 960 FPGA Features : DES Sched
19:01:53 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/fpgaapi.c : Line 673 FatalError()
19:00:51 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 1062 Time set
19:00:51 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 918 System Reset Exception – External Hard Reset WatchDog
19:00:51 UT : 01/08/01 : File root.c : Line 941 System Startup
19:00:51 UT : 01/08/01 : File root.c : Line 946 Software Version : CANOPY 7.3.6 Oct 24 2005 12:06:56 AP-DES
19:00:51 UT : 01/08/01 : File root.c : Line 950 Software Boot Version : CANOPYBOOT 3.0
19:00:51 UT : 01/08/01 : File root.c : Line 956 FPGA Version : 070605
19:00:51 UT : 01/08/01 : File root.c : Line 960 FPGA Features : DES Sched
20:00:13 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/fpgaapi.c : Line 673 FatalError()
19:57:38 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 1062 Time set
19:57:38 UT : 01/08/01 : File C:/ISIPPC/pssppc.250/bsps/devices/whisp/syslog.c : Line 918 System Reset Exception – External Hard Reset WatchDog
19:57:38 UT : 01/08/01 : File root.c : Line 941 System Startup
19:57:38 UT : 01/08/01 : File root.c : Line 946 Software Version : CANOPY 7.3.6 Oct 24 2005 12:06:56 AP-DES
19:57:38 UT : 01/08/01 : File root.c : Line 950 Software Boot Version : CANOPYBOOT 3.0
19:57:38 UT : 01/08/01 : File root.c : Line 956 FPGA Version : 070605
19:57:38 UT : 01/08/01 : File root.c : Line 960 FPGA Features : DES Sched