Type cd Program Files\Autodesk\Revit MEP 2011\ProgramĪfter confirming that the DLL registered successfully, launch Revit MEP to confirm that the error no longer appears.In the command prompt, type CD \ to get back to the root of C:.If not, please proceed to the steps below. Type regsvr32 'C:\Program Files\Autodesk\Revit MEP 2011\Program\ASHRAEDUCTDLL.dll' in the windowĪ dialog box indicating that the DLL was registered successfully should appear.Following are the steps to manually register the DLL, which should clear the above error: Generally, this error is a result of a 3rd-party DLL not being registered properly when installing Revit MEP 2011. Recently, we have had several reports of this error happening in 2011, and in most cases, neither of these recommendations have fixed the problem. Credentials will be emailed within 2 business days.
In other cases, when this issue occurred in 2009/2010, we had users uninstall/reinstall both versions, which resolved the problem most of the time. ASHRAE Duct Fitting Database 6.00.05 Software by ASHRAE, 2017 View all product details Most Recent Track It Language: Available Formats Availability Priced From ( in USD ) Self Extracting File Format This is an online database. The fix involved running Revit MEP as an administrator. Back in February, I posted an article with a suggested fix to this error that occurs in Revit MEP when selecting or drawing ducts, fittings, or equipment.