diff --git a/.appveyor.yml b/.appveyor.yml
index 5e90620..d5874b7 100644
--- a/.appveyor.yml
+++ b/.appveyor.yml
@@ -81,7 +81,7 @@ build_script:
     ) else (
       mkdir build &
       cd build &
-      cmake .. -DPython_Version="3.6" -DEIGEN3_INCLUDE_DIR="external/build/include/eigen3" -DCeres_DIR="external/build/CMake" -DNLOPT_INCLUDE_DIRS="external/build/include" -DNLOPT_LIBRARIES="external/build/lib/nlopt.lib" -Wdev -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON  -DCMAKE_BUILD_TYPE=Release -G "NMake Makefiles" &
+      cmake .. -DPython_Version="3.6" -DEIGEN3_INCLUDE_DIR="external/build/include/eigen3" -DCeres_DIR="external/build/CMake" -DNLOPT_INCLUDE_DIRS="../external/build/include" -DNLOPT_LIBRARIES="../external/build/lib/nlopt.lib" -Wdev -DCMAKE_VERBOSE_MAKEFILE:BOOL=ON  -DCMAKE_BUILD_TYPE=Release -G "NMake Makefiles" &
       nmake /NOLOGO &
       cd ..
     )
diff --git a/CMakeLists.txt b/CMakeLists.txt
index a7584ee..9d6174b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -209,15 +209,15 @@ target_link_libraries(rational_fitter_parallel quadprog)
 
 # TODO: Add check before compiling  IPOPT
 if (CERES_FOUND)
-    include_directories( ${CERES_INCLUDE_DIR} )
     alta_add_plugin(nonlinear_fitter_ceres                  nonlinear_fitter_ceres/fitter.cpp)
     target_link_libraries(nonlinear_fitter_ceres ${CERES_LIBRARIES})
+    target_include_directories(nonlinear_fitter_ceres PUBLIC ${CERES_INCLUDE_DIR})
     list(APPEND nonlinear_fitters ceres)
 endif()
 if (NLOPT_FOUND)
-    include_directories( ${NLOPT_INCLUDE_DIRS} )
     alta_add_plugin(nonlinear_fitter_nlopt                  nonlinear_fitter_nlopt/fitter.cpp)
     target_link_libraries(nonlinear_fitter_nlopt ${NLOPT_LIBRARIES})
+    target_include_directories(nonlinear_fitter_nlopt PUBLIC ${NLOPT_INCLUDE_DIRS})
     list(APPEND nonlinear_fitters nlopt)
 endif()
 #alta_add_plugin(nonlinear_fitter_ipopt                  nonlinear_fitter_ipopt/fitter.cpp)
@@ -306,9 +306,9 @@ add_test(NAME "brdf2data_kirby"
                              "--data-file" "${CMAKE_SOURCE_DIR}/sources/tests/Kirby2.dat"
          WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/tests")
 
-add_test(NAME "data2stats_kirby"
-         COMMAND "data2stats" "--input"     "Kirby2.dat"
-                              "--ref"       "${CMAKE_SOURCE_DIR}/sources/tests/Kirby2.dat"
+add_test(NAME "data2stats_pinkfelt"
+         COMMAND "data2stats" "--input"     "${CMAKE_SOURCE_DIR}/data/brdf/pink-felt-1d.alta"
+                              "--ref"       "${CMAKE_SOURCE_DIR}/data/brdf/pink-felt-1d.alta"
          WORKING_DIRECTORY "${CMAKE_BINARY_DIR}/tests")
 
 foreach(fitter IN ITEMS ${nonlinear_fitters})
diff --git a/sources/scripts/installer.nsi b/sources/scripts/installer.nsi
index 0317c93..e13bc56 100644
--- a/sources/scripts/installer.nsi
+++ b/sources/scripts/installer.nsi
@@ -64,7 +64,7 @@ Section "ALTA" SecMain
 
   ; Python package
   SetOutPath $INSTDIR\python
-  File /nonfatal /r "${ALTADIR}\build\python\alta.dll"
+  File /nonfatal /r "${ALTADIR}\build\python\alta.pyd"
 
   # Update the ENVIROMNENT
   WriteRegStr HKCU "Environment" "ALTA_DIR"   '$INSTDIR'