'Can't Make Type' Error When Loading MEP Family

Some users have experienced an issue where an error occurs when loading certain air terminal families in Revit MEP and selecting one or more types from the type catalog.  As shown below, the error reads "Can't Make Type", followed by the name of the family and type.

 

There seem to be two families from the Revit MEP imperial library that produce this error:

• Supply Diffuser with Plenum - Linear Slot - Hosted
• Return Diffuser with Plenum - Linear Slot - Hosted

The main reason for the error is that the values in the type catalog for the Diffuser Width parameter are not formatted as decimal fractions. 

To resolve this issue, replace the existing type catalog files for these families with the fixed versions included in the zip file below.

Here are the steps:

1. Save the zip file below to your local desktop
   
   
2. Extract the files to the following directory:
   
   For Microsoft XP installations (32 and 64 bit): 
   C:\Documents and Settings\All Users\Application Data\Autodesk\RME 2010\Imperial Library\Mechanical Components\Air-Side Components\Air Terminals
   
   For Microsoft Vista/Windows 7 installations (32 and 64 bit): 
   C:\ProgramData\Autodesk\RME 2010\Imperial Library\Mechanical Components\Air-Side Components\Air Terminals
   
   
3. Overwrite the existing files
   
   
4. Load/reload the families into the project
   
   
5. Select one or more types from the type catalog

The warning should no longer appear when loading the families.

Download Fixed Type Catalogs

(Note:  these files are fixed in Revit MEP 2011.  If you've installed 2011, you can replace the 2010 files with the ones installed with 2011)

There is also a technical solution for this issue posted on the Autodesk website here

 

Comments

[Alan aka cadalot]

The first Graphic have not loaded on your post and the "here" link at the bottom gives the following error message:-

The Page You Were Looking for Was Not Found
Most likely the page or file you are looking for has been moved or updated. Please use the links below to find current information.

[Jeremy]

Thank you for pointing out the errors, Alan. Both issues have now been resolved.

This is what happens when you finish writing and publishing a blog post at midnight :)