servicedesk doesn't start

Hi;
When I open the SD+ it can't starting. "There is an error There were 1 failed launches in a row, each lasting less than 300 seconds. Giving up." How can i resolve this?

STATUS | wrapper | 2005/10/26 13:52:26 | ManageEngine ServiceDesk 4 installed.
STATUS | wrapper | 2005/10/26 13:56:28 | Starting the ManageEngine ServiceDesk 4 service...
STATUS | wrapper | 2005/10/26 13:56:28 | --> Wrapper Started as Service
STATUS | wrapper | 2005/10/26 13:56:28 | Launching a JVM...
INFO | wrapper | 2005/10/26 13:56:33 | Waiting to start...
STATUS | wrapper | 2005/10/26 13:56:34 | ManageEngine ServiceDesk 4 started.
INFO | jvm 1 | 2005/10/26 13:56:51 | Failed to start the server. Please refer logs for more details
ERROR | wrapper | 2005/10/26 13:56:52 | JVM exited unexpectedly.
FATAL | wrapper | 2005/10/26 13:56:52 | There were 1 failed launches in a row, each lasting less than 300 seconds. Giving up.
FATAL | wrapper | 2005/10/26 13:56:52 | There may be a configuration problem: please check the logs.
STATUS | wrapper | 2005/10/26 13:56:52 | <-- Wrapper Stopped
STATUS | wrapper | 2005/10/26 13:57:01 | Starting the ManageEngine ServiceDesk 4 service...
STATUS | wrapper | 2005/10/26 13:57:01 | --> Wrapper Started as Service
STATUS | wrapper | 2005/10/26 13:57:01 | Launching a JVM...
INFO | jvm 1 | 2005/10/26 13:57:03 | This evaluation copy is valid for 29 days
STATUS | wrapper | 2005/10/26 13:57:05 | ManageEngine ServiceDesk 4 started.
INFO | jvm 1 | 2005/10/26 13:57:17 | Unclean shutdown of previous run.
INFO | jvm 1 | 2005/10/26 13:57:18 | Failed to start the server. Please refer logs for more details
ERROR | wrapper | 2005/10/26 13:57:19 | JVM exited unexpectedly.
FATAL | wrapper | 2005/10/26 13:57:19 | There were 1 failed launches in a row, each lasting less than 300 seconds. Giving up.
FATAL | wrapper | 2005/10/26 13:57:19 | There may be a configuration problem: please check the logs.
STATUS | wrapper | 2005/10/26 13:57:19 | <-- Wrapper Stopped
STATUS | wrapper | 2005/10/26 14:03:59 | Starting the ManageEngine ServiceDesk 4 service...
STATUS | wrapper | 2005/10/26 14:03:59 | --> Wrapper Started as Service
STATUS | wrapper | 2005/10/26 14:03:59 | Launching a JVM...
INFO | jvm 1 | 2005/10/26 14:04:02 | This evaluation copy is valid for 29 days
STATUS | wrapper | 2005/10/26 14:04:03 | ManageEngine ServiceDesk 4 started.
INFO | jvm 1 | 2005/10/26 14:04:16 | Unclean shutdown of previous run.
INFO | jvm 1 | 2005/10/26 14:04:17 | Failed to start the server. Please refer logs for more details
ERROR | wrapper | 2005/10/26 14:04:18 | JVM exited unexpectedly.
FATAL | wrapper | 2005/10/26 14:04:18 | There were 1 failed launches in a row, each lasting less than 300 seconds. Giving up.
FATAL | wrapper | 2005/10/26 14:04:18 | There may be a configuration problem: please check the logs.
STATUS | wrapper | 2005/10/26 14:04:18 | <-- Wrapper Stopped
STATUS | wrapper | 2005/10/26 14:09:20 | Starting the ManageEngine ServiceDesk 4 service...
STATUS | wrapper | 2005/10/26 14:09:20 | --> Wrapper Started as Service
STATUS | wrapper | 2005/10/26 14:09:20 | Launching a JVM...
INFO | jvm 1 | 2005/10/26 14:09:22 | This evaluation copy is valid for 29 days
STATUS | wrapper | 2005/10/26 14:09:25 | ManageEngine ServiceDesk 4 started.
INFO | jvm 1 | 2005/10/26 14:09:38 | Unclean shutdown of previous run.
INFO | jvm 1 | 2005/10/26 14:09:39 | Failed to start the server. Please refer logs for more details
ERROR | wrapper | 2005/10/26 14:09:40 | JVM exited unexpectedly.
FATAL | wrapper | 2005/10/26 14:09:40 | There were 1 failed launches in a row, each lasting less than 300 seconds. Giving up.
FATAL | wrapper | 2005/10/26 14:09:40 | There may be a configuration problem: please check the logs.
STATUS | wrapper | 2005/10/26 14:09:40 | <-- Wrapper Stopped