We have seen the same thing....it happens for use if a diagram was initially created using bpmn 1.1 and you try to view when using the bpmn v2 toolbox...there is a migration script you can run...
Under scripting create a 'New Project Browser Group' (if one doesn't exist), then create a new vbscript in the group, delete its content and paste the below in...select the package containing you bpmn, right click and run your script....
option explicit
!INC Local Scripts.EAConstants-VBScript
'
' This code has been included from the default Project Browser template.
' If you wish to modify this template, it is located in the Config\Script Templates
' directory of your EA install path.
'
' Script Name: MigrateBPMN
' Author: Jon Ridgway
' Purpose: Migrate BPMN 1.1 elements to BPMN 2.0, update tagged values etc using built in migrate function
' Date: 14/12/2011
'
'
' Use built in migrate function to migrate the selected element from BPMN1.1 to 2.0
'
Sub MigrateElement (sGUID, lngPackageID)
Dim proj as EA.Project
Set proj = Repository.GetProjectInterface
proj.Migrate sGUID, "BPMN1.1", "BPMN2.0"
'refresh the model
If lngPackageID<>0 Then
Repository.RefreshModelView (lngPackageID)
End If
End Sub
'
' Project Browser Script main function
'
sub OnProjectBrowserScript()
' Get the type of element selected in the Project Browser
dim treeSelectedType
treeSelectedType = Repository.GetTreeSelectedItemType()
' Handling Code: Uncomment any types you wish this script to support
' NOTE: You can toggle comments on multiple lines that are currently
' selected with [CTRL]+[SHIFT]+[C].
select case treeSelectedType
case otElement
' Code for when an element is selected
dim theElement as EA.Element
set theElement = Repository.GetTreeSelectedObject()
MigrateElement theElement.ElementGUID, theElement.PackageID
MsgBox "Element Migration Completed",0,"BPMN 2.0 Migration"
case otPackage
' Code for when a package is selected
dim thePackage as EA.Package
set thePackage = Repository.GetTreeSelectedObject()
MigrateElement thePackage.PackageGUID, thePackage.PackageID
MsgBox "Package Migration Completed",0,"BPMN 2.0 Migration"
' case otDiagram
' ' Code for when a diagram is selected
' dim theDiagram as EA.Diagram
' set theDiagram = Repository.GetTreeSelectedObject()
'
' case otAttribute
' ' Code for when an attribute is selected
' dim theAttribute as EA.Attribute
' set theAttribute = Repository.GetTreeSelectedObject()
'
' case otMethod
' ' Code for when a method is selected
' dim theMethod as EA.Method
' set theMethod = Repository.GetTreeSelectedObject()
case else
' Error message
Session.Prompt "This script does not support items of this type.", promptOK
end select
end sub
OnProjectBrowserScript
