The SEM software is unable to start due to corrupted spool files. The access to the GUI is broken during this time (white screen without authentication menu).

Logs in smp.log look like this:

2009-02-23 09:41:02,744 [main] INFO  Authenticator Initialized
2009-02-23 09:41:02,761 [main] INFO  Exaprotect Advanced Server initiating startup sequence
2009-02-23 09:41:02,763 [main] INFO  Exaprotect version: 3.1.0 (build 17478-213-1161)
2009-02-23 09:41:02,766 [main] INFO  Proc: 4 Mem: xxxMB/981MB/981MB
2009-02-23 09:41:03,075 [main] INFO  EventManager Context - config : InstanceName = TEST
2009-02-23 09:41:03,075 [main] INFO  EventManager Context - config : useGenerator = false
2009-02-23 09:41:03,075 [main] INFO  EventManager Context - config : generatorRateEPM = 0
2009-02-23 09:41:03,075 [main] INFO  EventManager Context - config : simplestEES = false
2009-02-23 09:41:03,156 [main] INFO  Creating 8 data inserter with queue length = 350
2009-02-23 09:41:03,299 [main] INFO  Max number of alerts in an incident : 100000
2009-02-23 09:41:03,299 [main] INFO  use.script!=YES in /home/exaprotect/conf/TEST/exa_incident.properties => No script execution allowed during creation of incidents
2009-02-23 09:41:09,079 [Maintain Process] INFO  Begin Maintenance Process
2009-02-23 09:41:09,093 [Maintain Process] INFO  End Maintenance Process

To fix this problem you have to delete all the corrupted files with the command:

rm -rf /var/lib/exaprotect/spool/MY_INSTANCE_NAME/ExaReceiver/all/*

and restart the runtime:

/etc/init.d/exa_runtime_MY_INSTANCE_NAME restart

This is fixed in SEM 3.2.0.