CIL Error :Duplicate type with name ‘Dynamics.Ax.application.’ in assembly ‘Dynamics.Ax.application.tablename, version=6.0.9, culture… In Ax2012

Solving  this issue to perform the follow the instructions:

1) Full  Compile  Ax

2) Stop AOS Services.

3) Go to the Server Path: C:\Program Files\Microsoft Dynamics AX\60\Server\InstanceName\bin\XppIL \ delete all DLL and netModule files.

4) Truncate the records in the SysXppAssembly table in the Model database. 

     syntax: Truncate table SysXppAssembly .

5) Start the AOS.

6) Perform Full CIL Compilation.