I am indeed mixing ADD with INSERT. But when linking my code with release version of Petsc I do not get this error, only when I link with the debug version.
I wanted to make sure it is indeed wrong to do so, and if so, why the error does not come up also in the release version. Many thanks! [0]PETSC ERROR: Object is in wrong state! [0]PETSC ERROR: Cannot mix add values and insert values!
