Error: “The CIL generator found errors and could not save the new assembly.”
Error: When run full or incremental CIL , system showing below error“The CIL generator found errors and could not save the new assembly.”

Possible reason: This might be CIL generation issue.
Suggested Solution:
Step I: Stop AX services
Step II: Delete all isolated files from below path (Please Note: Delete only files which are not in any folder)
C:\Program Files\Microsoft Dynamics AX\60\Server\MicrosoftDynamicsAX\bin\XppIL directory

Step III: Start AX service
Step IV: Synch DataDictonary
Step V: Full Compile
Step VI: Full CIL Compile
Note: These all operation must be perform in the same sequence. (I also tried this only :P )
Now try to reopen you AX client. It should be work.
- Harry