How to resolve to generate CIL error in AX2012

Resolve:

1. Stop the AOS
2. Back up the table SYSXPPASSEMBLY
3. Get the create script of table SYSXPPASSEMPLY and Drop the table
4. Create a new SYSXPPASSEMBLY table with the script
5. Back up and delete the folder “XPPIL” in Program Files\Microsoft Dynamics AX\60\Server\bin
6. Restart the AOS
7. Perform full compilation
8. Generate full CIL