Open Source Document Management System | OpenKM

Hello,
I' m new to this system. I' ve installed the openKM correctly and then i Opened KM using user "okmAdmin" with password "admin". I closed it and when i tried to open it for second time with the same username and password it writes (\"authentication error\"). Why is that happening?

Thanks for reading my message.

We'll we need some more information:
1- Operating system
2- Which version of OpenKM, hope 4.0 ?
3- Take a look at jboss server.log while starting, to see if there's some error

I suggest:
1- Extract a fresh zip jboss with openkm and try to run again

i ran this command

$ aptitude install openoffice.org2-l10n-es openoffice.org-java openoffice.org-java-common openoffice.org

to update the open office components but when i loged in, openkm failed

Please help me

What the the relation between the login problem and the OpenOffice installation?

Which OpenKM version are you using?

Have you read http://wiki.openkm.com/index.php/Quick_Install ?