Upgrade SD6 to SD7

I'm unable to migrate to SD7 from SD6 sp15.
Following error :
Microsoft Windows [version 5.2.3790]
(C) Copyright 1985-2003 Microsoft Corp.

C:\Documents and Settings\Administrateur.GIP-NET>cd \

C:\>cd adventnet

C:\AdventNet>cd me

C:\AdventNet\ME>cd bin
Le chemin d'acc�s sp�cifi� est introuvable.

C:\AdventNet\ME>cd servicedesk

C:\AdventNet\ME\ServiceDesk>cd bin

C:\AdventNet\ME\ServiceDesk\bin>updatemanager
14 mars 2008 12:43:57 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor <i
nit>
GRAVE: Inside SDPreProcessor.
14 mars 2008 12:43:57 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: mode true
14 mars 2008 12:43:57 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Active database server = mysql
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Deleting custom report folder....
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: buildInfo exists :::: true
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: jboss .\
14 mars 2008 12:43:58 com.adventnet.servicedesk.server.utils.SDDataManager <init
>
INFO: rootDir :: .\
14 mars 2008 12:43:58 com.adventnet.servicedesk.server.utils.SDDataManager <init
>
INFO: netutilsData :: {RELEASE={version=6.0.0}, BUILD={number=6015}}
14 mars 2008 12:43:58 com.adventnet.servicedesk.server.utils.SDDataManager <init
>
INFO: rebrandData :: {OPMANAGER={name=OpManager}, PRODUCT={name=AdventNet Manage
Engine ServiceDesk Plus}, ADMANAGER={name=ADManager}}
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: SystemProperty : sdp.prevBuildNo - 6015
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: buildNumberStr 6015
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: buildNumber 6�015
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: compBuild 6�012
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: retValue 1
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: mode true
14 mars 2008 12:43:58 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: System is going to take data backup now....
14 mars 2008 12:44:04 com.adventnet.db.adapter.DBInitializer startDBServer
INFO: Command to start DB server [cmd, /c, ".\\bin\startDB.bat", 33366]
14 mars 2008 12:44:21 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Data backup completed.
14 mars 2008 12:44:21 com.adventnet.j2ee.deployment.service.internal.JarExtracto
r extract
INFO: Extraction for C:\AdventNet\ME\ServiceDesk\applications\AdventNetServerCon
tainer.eear to C:\AdventNet\ME\ServiceDesk\eeartemp\applications\AdventNetServe
rContainer.eear
14 mars 2008 12:44:31 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Problem during installation of patch
java.sql.SQLException: null, message from server: "Duplicate entry '6000_TO_700
0_MIGRATION-RELEASETAG' for key 1"
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1902)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1106)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1200)
at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1161)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2084)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2034)
at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1249)
at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1195)
at com.adventnet.servicedesk.updatemgr.util.SDPreProcessor.betaEntry(SDP
reProcessor.java:5971)
at com.adventnet.servicedesk.updatemgr.util.SDPreProcessor.install(SDPre
Processor.java:425)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.adventnet.tools.update.installer.Unzipper.contextPreInstallation(
Unzipper.java:309)
at com.adventnet.tools.update.installer.Unzipper.invokePreInstallationCl
asses(Unzipper.java:136)
at com.adventnet.tools.update.installer.ApplyPatch.installPatch(ApplyPat
ch.java:274)
at com.adventnet.tools.update.installer.ApplyPatch.run(ApplyPatch.java:2
24)
at java.lang.Thread.run(Unknown Source)
14 mars 2008 12:44:36 com.adventnet.j2ee.deployment.service.internal.JarExtracto
r extract
INFO: Extraction for C:\AdventNet\ME\ServiceDesk\mysql.zip to C:\AdventNet\ME\S
erviceDesk\mysql
14 mars 2008 12:44:36 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor <i
nit>
GRAVE: Inside SDPreProcessor.
C:\AdventNet\ME\ServiceDesk\bin>updatemanager > 7000.txt
14 mars 2008 15:49:51 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor <i
nit>
GRAVE: Inside SDPreProcessor.
14 mars 2008 15:49:51 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: mode true
14 mars 2008 15:49:51 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Active database server = mysql
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Deleting custom report folder....
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: buildInfo exists :::: true
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: jboss .\
14 mars 2008 15:49:52 com.adventnet.servicedesk.server.utils.SDDataManager <init
>
INFO: rootDir :: .\
14 mars 2008 15:49:52 com.adventnet.servicedesk.server.utils.SDDataManager <init
>
INFO: netutilsData :: {RELEASE={version=6.0.0}, BUILD={number=6015}}
14 mars 2008 15:49:52 com.adventnet.servicedesk.server.utils.SDDataManager <init
>
INFO: rebrandData :: {OPMANAGER={name=OpManager}, PRODUCT={name=AdventNet Manage
Engine ServiceDesk Plus}, ADMANAGER={name=ADManager}}
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: SystemProperty : sdp.prevBuildNo - 6015
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: buildNumberStr 6015
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: buildNumber 6�015
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor ch
eckBuildNumber
INFO: compBuild 6�012
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: retValue 1
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: mode true
14 mars 2008 15:49:52 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: System is going to take data backup now....
14 mars 2008 15:50:08 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Data backup completed.
14 mars 2008 15:50:08 com.adventnet.j2ee.deployment.service.internal.JarExtracto
r extract
INFO: Extraction for C:\AdventNet\ME\ServiceDesk\applications\AdventNetServerCon
tainer.eear to C:\AdventNet\ME\ServiceDesk\eeartemp\applications\AdventNetServe
rContainer.eear
14 mars 2008 15:50:17 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor in
stall
INFO: Problem during installation of patch
java.sql.SQLException: null, message from server: "Duplicate entry '6000_TO_700
0_MIGRATION-RELEASETAG' for key 1"
at com.mysql.jdbc.MysqlIO.checkErrorPacket(MysqlIO.java:1902)
at com.mysql.jdbc.MysqlIO.sendCommand(MysqlIO.java:1106)
at com.mysql.jdbc.MysqlIO.sqlQueryDirect(MysqlIO.java:1200)
at com.mysql.jdbc.MysqlIO.sqlQuery(MysqlIO.java:1161)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2084)
at com.mysql.jdbc.Connection.execSQL(Connection.java:2034)
at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1249)
at com.mysql.jdbc.Statement.executeUpdate(Statement.java:1195)
at com.adventnet.servicedesk.updatemgr.util.SDPreProcessor.betaEntry(SDP
reProcessor.java:5971)
at com.adventnet.servicedesk.updatemgr.util.SDPreProcessor.install(SDPre
Processor.java:425)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at com.adventnet.tools.update.installer.Unzipper.contextPreInstallation(
Unzipper.java:309)
at com.adventnet.tools.update.installer.Unzipper.invokePreInstallationCl
asses(Unzipper.java:136)
at com.adventnet.tools.update.installer.ApplyPatch.installPatch(ApplyPat
ch.java:274)
at com.adventnet.tools.update.installer.ApplyPatch.run(ApplyPatch.java:2
24)
at java.lang.Thread.run(Unknown Source)
14 mars 2008 15:50:22 com.adventnet.j2ee.deployment.service.internal.JarExtracto
r extract
INFO: Extraction for C:\AdventNet\ME\ServiceDesk\mysql.zip to C:\AdventNet\ME\S
erviceDesk\mysql
14 mars 2008 15:50:22 com.adventnet.servicedesk.updatemgr.util.SDPreProcessor <i
nit>
GRAVE: Inside SDPreProcessor.

Any idea ?

Thanks.