Could not upgrade Jira 3.4.1 to Jira 3.5 ( java.lang.NullPointerException ) when All Users have BROWSE permission

Hi,
I tried to convert our old Jira 3.4.3 system to Jira 3.5

• I fetched Jira 3.5 Enterprise Edition from your server,
• I copied the old edit-webapp folder into our new Jira 3.5 folder
• I started "build.sh war"
• I created a new empty Oracle Database,
• Modifid jira.xml and enter die new OracleUserName and Location for the generated war-file
• I started Tomcat, the Jira Welcome Screen appears, i entered all data, including our licence-key.
• I logged in as adminstrator and restore our old JiraSystem via xml-Backup.

The convertion-script started ... But after a few minutes i get following message:

2006-02-06 13:29:24 error An error occurred performing JIRA upgrade task

(type: upgrade)

Exception thrown during upgrade: null
java.lang.NullPointerException
at com.atlassian.jira.upgrade.tasks.UpgradeTask_Build130.doUpgrade(UpgradeTask_Build130.java:40)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeTaskSucess(UpgradeManagerImpl.java:681)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.runUpgradeTasks(UpgradeManagerImpl.java:577)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgrade(UpgradeManagerImpl.java:403)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeeded(UpgradeManagerImpl.java:351)
at com.atlassian.jira.upgrade.UpgradeManagerImpl.doUpgradeIfNeededAndAllowed(UpgradeManagerImpl.java:311)
at com.atlassian.jira.action.admin.DataImport.doExecute(DataImport.java:176)
at webwork.action.ActionSupport.execute(ActionSupport.java:153)
at com.atlassian.jira.action.JiraActionSupport.execute(JiraActionSupport.java:58)
at com.atlassian.jira.action.JiraNonWebActionSupport.execute(JiraNonWebActionSupport.java:27)
at webwork.dispatcher.GenericDispatcher.executeAction(GenericDispatcher.java:132)
at com.atlassian.core.action.DefaultActionDispatcher.execute(DefaultActionDispatcher.java:34)
at com.atlassian.jira.web.action.util.ImportAll.doExecute(ImportAll.java:57)
at webwork.action.ActionSupport.execute(ActionSupport.java:153)
.....