Hi,

 I created a wokflow and everything seem to work, but if I go to the "Tasks" list and try to edit a task I get the following message: "There has been a problem retrieving the K2 process data. Please ensure that the account has rights to the K2 BlackPearl Workflow Item and that you are connecting to the BlackPearl server." (I never installed BlackPearl, only installed Blackpoint)

Please help!

I found this error message in the K2HostServer.exe CMD window, after starting the workflow withe a new document in the list: 

Error   0 System.Exception: Unable to modify workflow: Server was unable to process request. ---> Object reference not set to an instance of an object.
   at ExtenderProject_dd9be30056e24d9caac0fb9084ebb912.EventItem_9cf4a5fdf46d40a29896aa1da019898e.ExecuteForUser(String destination) in c:\Documents and Settings\<username>\Local Settings\Temp\ExtenderProjects\CSWinWF-dd9be30056e24d9caac0fb9084ebb912\
EventItem_9cf4a5fdf46d40a29896aa1da019898e.xoml.cs:line 142
   at ExtenderProject_dd9be30056e24d9caac0fb9084ebb912.EventItem_9cf4a5fdf46d40a29896aa1da019898e.UpdateSPTask_ExecuteCode(Object sender, EventArgs e) in c:\Documents and Settings\<username>\Local Settings\Temp\ExtenderProjects\CSWinWF-dd9be30056e24d9
caac0fb9084ebb912\EventItem_9cf4a5fdf46d40a29896aa1da019898e.xoml.cs:line 162

Does nobody have an idea?

That normally means that the K2 server is having issues interacting with the MOSS server.  But I haven't seen anybody having an object reference error.  Just to check did you add the K2 service account as a MOSS site admin?

Yes, the service account is a MOSS site admin.

Just to check, if you are logged onto the K2 server using the K2 service account.  Are you able to modify the list on the MOSS server directly from the MOSS site?  This is just to verify if the MOSS setup is correct.

Yes,

I can create and delete items in the doc library, in the tasks list and in the running instances list with the service account :-/

Can't really think of anything else that might be the problem except environmental issues.  At this point, I think the best course would be to log a ticket and get K2 support to look into your environment.  They can probably dig up more information from the logs on the server.

Can you please verify that your K2 worklist item are being created ? Do they exist for the destination users ?

How can I check this?

Create a process portal. Access the process portal as the user that you created the task for and you should see a worklist item home page in the K2 worklist item webpart

 

 I am suffering the same problem and I think task item is created but work item in Worklist is not created(or shown on Webpart).

ok, there are no worklist items

Are there any errors visable in the Event Viewer ? If there was any errors that were caused by the workflow it will surface in the event viewer as K2 Workflow Integration errors.

Yes, after creating the workflow and then creating a new document in the library, I get the following errors in the event log (IP, servername and username changed):

Ereignistyp: Error
Ereignisquelle: Forms Generation Client
Ereigniskategorie: Keine
Ereigniskennung: 0
Datum:  07.08.2008
Zeit:  09:28:02
Benutzer:  Nicht zutreffend
Computer: servername
Beschreibung:
[ClientEventServiceFunctions::GetWorkListItem], Error getting actions :System.Exception: 26030 Worklist item 0 not found for K2:Domain\surname, firstname at 10.0.0.100:12
   at SourceCode.Workflow.Client.InternalConnection.Call(ArchiveX ar, MessageType msgtype)
   at SourceCode.Workflow.Client.InternalConnection.CallFunction(ArchiveX ar)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform, Boolean Alloc, Boolean IgnoreStatus, String ManagedUser)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform)
   at SourceCode.Workflow.RuntimeServices.Functions.ClientEventServiceFunctions.GetWorkListItem(String K2Server, String UserName, String WorklistXml)

Weitere Informationen über die Hilfe- und Supportdienste erhalten Sie unter http://go.microsoft.com/fwlink/events.asp.

---------------------------------------

Ereignistyp: Error
Ereignisquelle: Forms Generation Client
Ereigniskategorie: Keine
Ereigniskennung: 0
Datum:  07.08.2008
Zeit:  09:28:02
Benutzer:  Nicht zutreffend
Computer: servername
Beschreibung:
[ClientEventServiceFunctions::GetWorkListItem], Error getting actions :System.Exception: 26030 Worklist item 0 not found for K2:Domain\surname, firstname at 10.0.0.100:13
   at SourceCode.Workflow.Client.InternalConnection.Call(ArchiveX ar, MessageType msgtype)
   at SourceCode.Workflow.Client.InternalConnection.CallFunction(ArchiveX ar)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform, Boolean Alloc, Boolean IgnoreStatus, String ManagedUser)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform)
   at SourceCode.Workflow.RuntimeServices.Functions.ClientEventServiceFunctions.GetWorkListItem(String K2Server, String UserName, String WorklistXml)

Weitere Informationen über die Hilfe- und Supportdienste erhalten Sie unter http://go.microsoft.com/fwlink/events.asp.

--------------------------------------------

Ereignistyp: Error
Ereignisquelle: K2 SharePoint Workflow Integration
Ereigniskategorie: Keine
Ereigniskennung: 0
Datum:  07.08.2008
Zeit:  09:28:58
Benutzer:  Nicht zutreffend
Computer: servername
Beschreibung:
[SharePointServiceFunctions::FinishWFIntegrationWLI], Problem on FinishWFIntegrationWLI :System.Exception: 26030 Worklist item 0 not found for K2:Domain\surname, firstname at 10.0.0.100:19
   at SourceCode.Workflow.Client.InternalConnection.Call(ArchiveX ar, MessageType msgtype)
   at SourceCode.Workflow.Client.InternalConnection.CallFunction(ArchiveX ar)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform, Boolean Alloc, Boolean IgnoreStatus, String ManagedUser)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform)
   at SourceCode.Workflow.RuntimeServices.Functions.SharePointServiceFunctions.FinishWFIntegrationWLI(String K2Server, String SerialNr, String PlatForm, String defaultAction, String ClientUserLogon)

Weitere Informationen über die Hilfe- und Supportdienste erhalten Sie unter http://go.microsoft.com/fwlink/events.asp.

------------------------------------------------------

 Ereignistyp: Error
Ereignisquelle: K2 SharePoint Workflow Integration
Ereigniskategorie: Keine
Ereigniskennung: 0
Datum:  07.08.2008
Zeit:  09:28:58
Benutzer:  Nicht zutreffend
Computer: servername
Beschreibung:
[SharePointServiceFunctions::FinishWFIntegrationWLI], Problem on FinishWFIntegrationWLI :System.Exception: 26030 Worklist item 0 not found for K2:Domain\surname, firstname at 10.0.0.100:19
   at SourceCode.Workflow.Client.InternalConnection.Call(ArchiveX ar, MessageType msgtype)
   at SourceCode.Workflow.Client.InternalConnection.CallFunction(ArchiveX ar)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform, Boolean Alloc, Boolean IgnoreStatus, String ManagedUser)
   at SourceCode.Workflow.Client.Connection.OpenWorklistItem(String SerialNumber, String Platform)
   at SourceCode.Workflow.RuntimeServices.Functions.SharePointServiceFunctions.FinishWFIntegrationWLI(String K2Server, String SerialNr, String PlatForm, String defaultAction, String ClientUserLogon)

Weitere Informationen über die Hilfe- und Supportdienste erhalten Sie unter http://go.microsoft.com/fwlink/events.asp.

-----------------------------

 Ereignistyp: Error
Ereignisquelle: K2 SharePoint Workflow Integration
Ereigniskategorie: Keine
Ereigniskennung: 0
Datum:  07.08.2008
Zeit:  11:42:49
Benutzer:  Nicht zutreffend
Computer: servername
Beschreibung:
[SharePointIntegrationServices:SetWFIntegrationDataFields], System.Xml.XmlException: Root element is missing.
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
   at System.Xml.XmlDocument.Load(XmlReader reader)
   at System.Xml.XmlDocument.LoadXml(String xml)
   at SourceCode.Workflow.RuntimeServices.Functions.SharePointServiceFunctions.UpdateProcessInstance(ProcessInstance processInstance, String SPIntData, Boolean GetWFISerializedProcessData)

Weitere Informationen über die Hilfe- und Supportdienste erhalten Sie unter http://go.microsoft.com/fwlink/events.asp.

-----------------------------------------------

Ereignistyp: Error
Ereignisquelle: K2 SharePoint Workflow Integration
Ereigniskategorie: Keine
Ereigniskennung: 0
Datum:  07.08.2008
Zeit:  11:42:49
Benutzer:  Nicht zutreffend
Computer: servername
Beschreibung:
[SharePointIntegrationServices:SetWFIntegrationDataFields], System.Xml.XmlException: Root element is missing.
   at System.Xml.XmlTextReaderImpl.Throw(Exception e)
   at System.Xml.XmlTextReaderImpl.ThrowWithoutLineInfo(String res)
   at System.Xml.XmlTextReaderImpl.ParseDocumentContent()
   at System.Xml.XmlTextReaderImpl.Read()
   at System.Xml.XmlLoader.Load(XmlDocument doc, XmlReader reader, Boolean preserveWhitespace)
   at System.Xml.XmlDocument.Load(XmlReader reader)
   at System.Xml.XmlDocument.LoadXml(String xml)
   at SourceCode.Workflow.RuntimeServices.Functions.SharePointServiceFunctions.UpdateProcessInstance(ProcessInstance processInstance, String SPIntData, Boolean GetWFISerializedProcessData)

Weitere Informationen über die Hilfe- und Supportdienste erhalten Sie unter http://go.microsoft.com/fwlink/events.asp.