problema con java.lang.NullPointerException

[gax80]

ciao ragazzi
sto installando un cms fatto in java, ma al momento dell'installazione mi dà questo problema:

at org.opencms.setup.CmsSetupWorkplaceImportThread.run(CmsSetupWorkplaceImportThread.java:209)
32:		at org.opencms.setup.CmsSetupWorkplaceImportThread.kill(CmsSetupWorkplaceImportThread.java:118)
31:		at org.opencms.main.CmsShell.exit(CmsShell.java:557)
30:	java.lang.NullPointerException
29:		at org.opencms.setup.CmsSetupWorkplaceImportThread.run(CmsSetupWorkplaceImportThread.java:194)
28:		at org.opencms.main.CmsShell.start(CmsShell.java:646)
27:		at org.opencms.main.CmsShell.executeCommands(CmsShell.java:818)
26:		at org.opencms.main.CmsShell.executeCommand(CmsShell.java:743)
25:	${user}@${project}>java.lang.NullPointerException
24:	${user}@${project}># Turn echo on
23:		... 5 more
22:		at org.opencms.db.CmsSecurityManager.init(CmsSecurityManager.java:2711)
21:		at org.opencms.db.CmsDriverManager.init(CmsDriverManager.java:4307)
20:		at org.opencms.db.generic.CmsProjectDriver.fillDefaults(CmsProjectDriver.java:668)
19:		at org.opencms.db.generic.CmsVfsDriver.writeResource(CmsVfsDriver.java:2826)
18:		at org.opencms.db.generic.CmsVfsDriver.internalReadParentId(CmsVfsDriver.java:3030)
17:	Caused by: org.opencms.file.CmsVfsResourceNotFoundException: Unable to read parent id of resource "[B@d2efa1".
16:		at org.opencms.setup.CmsSetupWorkplaceImportThread.run(CmsSetupWorkplaceImportThread.java:155)
15:		at org.opencms.main.CmsShell.<init>(CmsShell.java:450)
14:		at org.opencms.main.OpenCmsCore.upgradeRunlevel(OpenCmsCore.java:1692)
13:		at org.opencms.main.OpenCmsCore.initConfiguration(OpenCmsCore.java:1117)
12:		at org.opencms.db.CmsSecurityManager.newInstance(CmsSecurityManager.java:156)
11:		at org.opencms.db.CmsSecurityManager.init(CmsSecurityManager.java:2720)
10:	org.opencms.main.CmsInitException: Critical error while loading driver manager.

mi sapreste dire che tipo di problema è??

[Andrea1979]

Tutto chiarissimo problemi con qualche driver (database)? consulta la documentazione del CMS che stai installando...

[gax80]

ho seguito tutte le istruzioni, mysql 4.x o 5.x, apache tomcat 5,5, java 5, il bello che tempo fa lho installai e funzionava, ora lo rifatto ma nulla mi esce questo problema, non riesco a capire, ho rifatto la stessa cosa su un altro pc e mi va alla grande...nn riesco a capire!!!