KB Article #PDT215 – Object reference not set to an instance of an object

Title: Object reference not set to an instance of an object

Product:

CompressionInsight

Version(s):

Versions 1.1 and up

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Issue:

When adding a tag, an error message pops up ****ERROR**** 11:22 AM:: Object reference not set to an instance of an object.

This can occur after switching to a different PI server before CompressionInsight  has had the opportunity to clean up the file system and the settings file becomes corrupt.

Resolution:

1) Check the PDT.Engine settings file to ensure the PI Server being used and the tags associated with the PI server match.

If they don’t match there are two ways to resolve this issue:

Option 1:

1. Stop the PDT.Engine service and close CompressionInsight
2. Delete the PDT.Engine settings file
3. Restart PDT.Engine service and CompressionInsight

Option 2:

1. Stop the PDT.Engine service and close CompressionInsight
2. Open the PDT.Engine settings file
3. Edit the file to remove any tags that dont exist on the PI Server being used
4. Save the settings file
5. Restart PDT.Engine service and CompressionInsight