Duplicate type with name 'Dynamics.Ax.application.<My Class Name>' in assembly 'Dynamics.Ax.application,

Question

I see following error when I compile CIL in Dynamics 2012 ax -

Duplicate type with name 'Dynamics.Ax.application.' in assembly 'Dynamics.Ax.application, version=6.0.947.280, culture...

I tried

1. Delete class from AOT
2. Delete XppIL directory (c:\Program Files\Microsoft Dynamics AX\60\Server\InstanceName\bin)
3. Restart AOS
4. Run CIL compile

What else I can try ?

Answer 1

The following should resolve the problem:

• Full compile AX
• Stop the AOS
• Truncate the SysXPPAssembly table in SQL (the table is used to contain the assemblies and to share between multiple AOS instances)
• Delete the DLL and netmodule files in your AOS's bin\xppIL directory
• Restart the AOS
• Perform full CIL generation