Shared Parameter Text File: could not be read, or is not a valid shared parameter file

I wanted to outline a potential error dialog and 2 scenarios where this could occur related to the shared parameters text file:

The file ‘XX’ could not be read, or is not a valid shared parameter file.

In these 2 scenarios, the text file is read fine in Revit 2011 and 2012.  However Revit 2010 generates this message.

This can occur in the 2 examples below:

1.  Load Classification Type

In a Revit MEP Family > Manage > Shared Parameters > New > Discipline > Electrical > Type of Parameter > Load Classification.

This will add this parameter to the shared parameter file.

2.  Divided Surface Type

In the Conceptual Mass Environment > Manage > Shared Parameters > New > Type of Parameter > <Divided Surface Type><Curtain Panels>.

This will add this parameter to the shared parameter file.

In both cases above, Revit 2010 [or earlier releases] did not have the same type of parameters.  So when the file is initially read, Revit does not recognize the lines and generates the error message.

For 2010 or earlier releases you can save a copy of the shared parameter text file, and search for the following:

Load Classification Type  - Search for:

LOADCLASSIFICATION

Divided Surface Type – Search for:

DIVIDEDSURFACETYPE

You can either take note of the parameters you need to remove in the copy for Revit 2010, or remove the lines in the text file.  Once the applicable parameters are removed in the copy, it will be read as expected in Revit 2010 or earlier releases.