Can't publish a Workflow

Hi experts,

My partner has a problem when publishing a Workflow on CRM 4.0.

Since it's already EOS, they can't open a ticket and would like to know if anyone has experience about it.

Please check the error message below.

http://192.168.200.31/CHT/_grid/cmds/dlg_ativate.aspx?iObjType=4703&iTotal=1&iIndex=0&iId={AD2BE0D4-A85B-45C4-84F8-DC65BCC3101F}
TargetInvocationException
NT AUTHORITY\NETWORK SERVICE
Crm.Application.Utility.Util.RaiseXMLError(Exception exception)