While running a Workflow application recently developed, a problem manifested itself in a couple of different ways. There was first an error:

"Server was unable to process request.--->Object Reference not set to an instance of an Object"

When attempting to open a workflow .package file from an external source, (which is the best way to transfer Workflow projects), the following Unexpected Exception, Size Mismatch error occurred, as shown in the screen shot. This error caused frustration, as no matter what I tried to get the .package file to open, it would not. Why? 

While workig within a multipath dialogue workflow component, the embedded decision model begins its evaluation and process of data, but for some reason does not complete successfully and return program control back to the source dialogue component.  This can really wreak havoc when troubleshooting, as no model validation errors are present.  You are just left wondering<

Of the occasional Servicedesk installation issues, this one can be frustrating.  You will proceed through the first phase of the process, and while watching the details of the install, observe the following error:

An error has occurred at: GetAllPermissions
Error Message: Empty SessionID.

In familiarizing myself with Workflow and its features, I began by building a simple webforms project in Workflow 6.5, and testing the project in debug mode, it worked fine.  However, wanting to try out all of the fun new features, and to make this test application  accessible by others, It was published to the server.  After publishing it, and attempting to use the URL of t

Most of the time, after installing and properly configuring Workflow, the ability to publish developed applications is intact and works well.  Recently, while attempting to publish a workflow project to the webserver, the publishing process appears to complete correctly, and the files were copied to the correct location.  But when opening the browser and attemp

While testing out a file attachment process in a workflow, a "Internet Explorer cannot display the webpage" message appeared when executing the portion of a Workflow using the 'InputFileComponent'.  It was very unusual.  There were no other messages, and debug logging failed to expose more information.

Recently, I encountered a Application Metering problem, which was evidenced by constantly seeing the following three errors in the Altiris log files.

Error 1: Priority: 2

Date: 6/23/2009 12:41:41 PM

Tick Count: 11234656

Host Name: xxxxxxxxxx

Process: aexsvc.exe (480)

Thread ID: 572

Recently, while trying to optimize collection refresh times on a 6.x Notification Server, some analysis was performed using the vcollection view.  It was observed that there were a substantial amount of collections, over 1500, that were titled "Internal Collection for applying SWD Agent Rollout Task".  Most of them had a creation date of over 2 years ago, and modif