Hi, Changeset f301815fc494cb333d15c0cefabf71a0988a0321 (rev 18363) seems to confuse the intel compilers (I tested 11.1 on linux x86_64 and mac OS X). After updating past this point, I get tons of warnings like drawv.c(397): warning #187: use of "=" where "==" may have been intended ierr = PetscFree((*sviewer)->data);CHKERRQ(ierr); ^ drawv.c(398): warning #187: use of "=" where "==" may have been intended ierr = PetscHeaderDestroy(*sviewer);CHKERRQ(ierr); ^ drawv.c(398): warning #187: use of "=" where "==" may have been intended ierr = PetscHeaderDestroy(*sviewer);CHKERRQ(ierr); ^ Is this right? Blaise -- Department of Mathematics and Center for Computation & Technology Louisiana State University, Baton Rouge, LA 70803, USA Tel. +1 (225) 578 1612, Fax +1 (225) 578 4276 http://www.math.lsu.edu/~bourdin