The list of workflow actions on the server references an assembly that does not exist

Question

Hi,
This issue has been discussed many times in this forum , the reason why I am posting is I tried the resolution steps but I dont see any luck.
I am getting the below message from the SharePoint designer 2007 when I am trying to modify a workflow
"This list of workflow actions on the server references an assembly that does not exist. Some actions will not be available. The assembly strong name is Microsoft.SharePoint.WorkflowActions, Version=12.0.0.0, Culture=neutral, PublicKeyToken=71e9bce111e9429c.
Contact your server administrator for more information."
#1 : One of the post says "Normally you would see that error because someone has extended the Workflow actions available in SPD with a custom action developed in Visual Studio.  These custom actions are loaded when your workstation reads the WSS.ACTIONS
file on the server.  The file is located in the 12 hive under Template\1033\workflow.  Your WSS.Actions file contains a reference to a custom action .dll which is not available on the server."
I opened the WSS.Actions file in notepad, I dont see any line with *.dll in it. Am I missing something?
#2: Another post says "The solution I discovered was that the server running my SharePoint Services was not up to .NET 3.0.  As soon as I updated to .NET 3.0 everything worked.I had made sure the machine running SharePoint Designer was updated, but
had missed the SHarePoint Services server."
The server is already updated to .Net 3.0.
#3: I went to the %System Drive%\Documents and Settings\Local Settings\ApplicationData\Microsoft\SharePointDesigner.
Deleted the ProxyAssemblyCache folder but no luck.
Just checking if any one was able to resolve this issue by following any of the solution other than the above mentioned ones.
Thanks,
Cutloo

Answer 1

    I have the similar issue with my custom work flow. I have searched the whole day for the solution but no success, then at last a simple track works for me. Please try this if any one faces such issue.
Basically the assembly that we have define in the ACTIONS file dose not exists on the server, because of two reasons, either we have given the wrong assembly name (in our case the namespace name inside our solution) or the PublicKeyToken may differ from the
original assembly, that are deployed in GAC.
    So cross check both of these, in my case the assembly name was fine,
 <Action
    Name="Move Item to Another List and Send Email"
    ClassName="MyAssemblyName.Classname"
    Assembly="MyAssemblyName,Version=1.0.0.0, Culture=neutral, PublicKeyToken=4053d1fde8a1c781"
    AppliesTo="all"
    Category="Email actions">
But the problem was in the 'PublicKeyToken', so i double click on the feature inside my solution,then in the bottom i have clicked on the manifest tab to check the entries.
<Feature xmlns="http://schemas.microsoft.com/sharepoint/" Title="MyAssemblyName Feature1" Id="f7f1bda0-5f65-40f1-a705-f6f15a41da3a" ReceiverAssembly="MyAssemblyName, Version=1.0.0.0, Culture=neutral, PublicKeyToken=0c32dbb769ed64b5"
ReceiverClass="MyAssemblyName.Features.Feature1.Feature1EventReceiver" Scope="WebApplication"></Feature>
Here i got the actual PublicKeyToken for my assembly (0c32dbb769ed64b5), i have replaced this number inside ACTIONS file, deploy the soultion, reset IIS.
It works for me,