diff --git a/ChangeLog b/ChangeLog
index 465063d8..a9e9a442 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -12,6 +12,17 @@ or
 
 https://bitbucket.org/muonspin/musrfit/commits/all
 
+Release of V1.2.0, 2017/10/26
+=============================
+
+Adopted to be ready for rpm builds in a first step. This will be followed by debian style
+packages.
+
+Release of V1.1.0, 2017/10/26
+=============================
+
+Added full DKS support, i.e. additionally to CUDA also OpenCL for GPU's and CPU's in place.
+
 Release of V1.0.0, 2017/05/18
 =============================
 
diff --git a/configure.ac b/configure.ac
index 9e6f5936..39ca5ca6 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1,7 +1,7 @@
 AC_REVISION([m4_esyscmd_s([git describe --always])])
 
 AC_PREREQ(2.63)
-AC_INIT([musrfit],[1.1.0],[andreas.suter@psi.ch])
+AC_INIT([musrfit],[1.2.0],[andreas.suter@psi.ch])
 AC_CONFIG_AUX_DIR(admin)
 AC_CANONICAL_HOST
 #AC_MSG_RESULT([${host} ${host_cpu} ${host_vendor} ${host_os}])
@@ -35,7 +35,7 @@ dnl -----------------------------------------------
 
 #release versioning
 MUSR_MAJOR_VERSION=1
-MUSR_MINOR_VERSION=1
+MUSR_MINOR_VERSION=2
 MUSR_MICRO_VERSION=0
 
 #release versioning
@@ -1212,11 +1212,24 @@ else
   INSTALLDIR="${prefix}"
 fi
 
-if test -d "${INSTALLDIR}/doc"
+dnl only define DOCDIR if not already present. This allows
+dnl to feed DOCDIR on the configure level which is useful when
+dnl for instance building a rpm. DOCDIR2 is needed for rpmbuild only
+if test "x${DOCDIR}" = "x"
 then
-  DOCDIR="${INSTALLDIR}/doc/musrfit"
+  if test -d "${INSTALLDIR}/doc"
+  then
+    DOCDIR="${INSTALLDIR}/doc/musrfit"
+  else
+    DOCDIR="${INSTALLDIR}/share/doc/musrfit"
+  fi
 else
-  DOCDIR="${INSTALLDIR}/share/doc/musrfit"
+  if test -d "${INSTALLDIR}/doc"
+  then
+    DOCDIR2="${INSTALLDIR}/doc/musrfit"
+  else
+    DOCDIR2="${INSTALLDIR}/share/doc/musrfit"
+  fi
 fi
 
 AC_SUBST(DOCDIR)
@@ -1441,12 +1454,21 @@ echo ""
 
 dnl --------------
 dnl create header file that musredit knows at runtime where to find the documentation
+dnl the DOCDIR2 tag is used for rpmbuild only
 dnl --------------
 if test "x$enable_editor" != "xno" && test "x${QMAKEBIN}" != "x" && test "x${QTEDITOR}" = "xmusredit_qt5"; then
   echo \#define MUSRFIT_PREFIX \"${INSTALLDIR}\" > src/musredit_qt5/musrfit-info.h
-  echo \#define MUSRFIT_DOC_DIR \"${DOCDIR}\" >> src/musredit_qt5/musrfit-info.h
+  if test "x$DOCDIR2" = "x"; then
+    echo \#define MUSRFIT_DOC_DIR \"${DOCDIR}\" >> src/musredit_qt5/musrfit-info.h
+  else 
+    echo \#define MUSRFIT_DOC_DIR \"${DOCDIR2}\" >> src/musredit_qt5/musrfit-info.h
+  fi
 fi
 if test "x$enable_editor" != "xno" && test "x${QMAKEBIN}" != "x" && test "x${QTEDITOR}" = "xmusredit"; then
   echo \#define MUSRFIT_PREFIX \"${INSTALLDIR}\" > src/musredit/musrfit-info.h
-  echo \#define MUSRFIT_DOC_DIR \"${DOCDIR}\" >> src/musredit/musrfit-info.h
+  if test "x$DOCDIR2" = "x"; then
+    echo \#define MUSRFIT_DOC_DIR \"${DOCDIR}\" >> src/musredit/musrfit-info.h
+  else
+    echo \#define MUSRFIT_DOC_DIR \"${DOCDIR2}\" >> src/musredit/musrfit-info.h
+  fi
 fi
diff --git a/src/classes/PFitter.cpp b/src/classes/PFitter.cpp
index b124490d..09733447 100644
--- a/src/classes/PFitter.cpp
+++ b/src/classes/PFitter.cpp
@@ -1138,7 +1138,12 @@ Bool_t PFitter::ExecuteHesse()
   TString str = TString::Format("Hesse:    %.3f sec", (end-start)/1.0e3);
   fElapsedTime.push_back(str);
   if (!mnState.IsValid()) {
-    cerr << endl << ">> PFitter::ExecuteHesse(): **WARNING** Hesse encountered some problems!";
+    cerr << endl << ">> PFitter::ExecuteHesse(): **WARNING** Hesse encountered a problem! The state found is invalid.";
+    cerr << endl;
+    return false;
+  }
+  if (!mnState.HasCovariance()) {
+    cerr << endl << ">> PFitter::ExecuteHesse(): **WARNING** Hesse encountered a problem! No covariance matrix available.";
     cerr << endl;
     return false;
   }