Cannot select a record in Model security policy runtime view (ModelSecPolRuntimeView). Error accessing database connection. Cannot create a record in SysXppAssembly (SysXppAssembly). The record already exists.

I have an error on my server delevelopment in dynamic ax 2012 r3

the error syntax is : Cannot select a record in Model security policy runtime view (ModelSecPolRuntimeView).
Error accessing database connection.
Cannot create a record in SysXppAssembly (SysXppAssembly).
The record already exists.

the solution is :
1.full compile
2. synchronize
3. full cill
4. restart aos
5. start dyanmic ax 2012 (the error fixed)