I upgraded from a Websitepanel 2.1 installaion and I cannot seem to create mailboxes or mail aliases. When creating mailboxes there is no error but also no mailbox is created. When i create a mail alias i am prompted with the following error:

System.Web.Services.Protocols.SoapException: System.Web.Services.Protocols.SoapException: Server was unable to process request. ---> System.Exception: Error executing 'ADD' task on 'a@polilube.com' MAIL_FORWARDING ---> System.Web.Services.Protocols.SoapException: Server did not recognize the value of HTTP Header SOAPAction: http://smbsaas/solidcp/server/MailAliasExists.
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at SolidCP.Providers.Mail.MailServer.MailAliasExists(String mailAliasName)
at SolidCP.EnterpriseServer.MailServerController.AddMailForwarding(MailAlias item)
--- End of inner exception stack trace ---
at SolidCP.EnterpriseServer.MailServerController.AddMailForwarding(MailAlias item)
at SolidCP.EnterpriseServer.esMailServers.AddMailForwarding(MailAlias item)
--- End of inner exception stack trace ---
at System.Web.Services.Protocols.SoapHttpClientProtocol.ReadResponse(SoapClientMessage message, WebResponse response, Stream responseStream, Boolean asyncCall)
at System.Web.Services.Protocols.SoapHttpClientProtocol.Invoke(String methodName, Object[] parameters)
at SolidCP.EnterpriseServer.esMailServers.AddMailForwarding(MailAlias item)
at SolidCP.Portal.MailForwardingsEditForwarding.SaveItem()'

Any help would be great! thanks for an awesome product btw!