diff --git a/BuildTools/centos/GNUmakefile b/BuildTools/centos/GNUmakefile
index 2d5feba8c..e33bb7c1d 100644
--- a/BuildTools/centos/GNUmakefile
+++ b/BuildTools/centos/GNUmakefile
@@ -56,7 +56,7 @@ build-geoda-mac:
 	cp run.sh build/run.sh
 	chmod +x build/run.sh
 	cp GeoDa.desktop build/GeoDa.desktop
-	cp $(GeoDa_ROOT)/BuildTools/CommonDistFiles/cache.sqlite build/web_plugins/cache.sqlite
+	cp $(GeoDa_ROOT)/BuildTools/CommonDistFiles/cache.sqlite build/cache.sqlite
 	cp -rf $(GeoDa_ROOT)/BuildTools/CommonDistFiles/web_plugins/* build/web_plugins/
 	cp $(GeoDa_ROOT)/BuildTools/CommonDistFiles/GeoDa.png build/GeoDa.png
 	cp $(GeoDa_ROOT)/rc/data_viewer_dialogs.xrc build/Resources
diff --git a/BuildTools/centos/build64.sh b/BuildTools/centos/build64.sh
index 5bb43a4b5..1c3f2d62e 100755
--- a/BuildTools/centos/build64.sh
+++ b/BuildTools/centos/build64.sh
@@ -604,8 +604,8 @@ echo "% Building wxWidgets 3.0.2 %"
 echo "%%%%%%%%%%%%%%%%%%%%%%%%%%%%"
 # sudo apt-get install libgtk2.0-dev libglu1-mesa-dev libgl1-mesa-dev
 {
-    LIB_NAME=wxWidgets-3.0.2
-    LIB_URL="https://dl.dropboxusercontent.com/u/145979/geoda_libraries/wxWidgets-3.0.2.tar.bz2"
+    LIB_NAME=wxWidgets-3.1.0
+    LIB_URL="https://dl.dropboxusercontent.com/u/145979/geoda_libraries/wxWidgets-3.1.0.tar.bz2"
 
     LIB_FILENAME=$(basename "$LIB_URL" ".tar")
     LIB_CHECKER=wx-config
diff --git a/BuildTools/centos/create_rpm.sh b/BuildTools/centos/create_rpm.sh
index a09aca80d..8c1e26ff4 100755
--- a/BuildTools/centos/create_rpm.sh
+++ b/BuildTools/centos/create_rpm.sh
@@ -1,11 +1,15 @@
 #!/bin/bash
 
+rm *.rpm
+cp rpmmacros ~/.rpmmacros
 rm -rf rpm/
 cp -rf rpm_template/ rpm/
+mkdir rpm/SOURCES
 cp -rf build/ rpm/SOURCES/
 mv rpm/SOURCES/build rpm/SOURCES/GeoDa-1.8
+rm -r rpm/SOURCES/GeoDa-1.8/web_plugins/d3
 cd rpm/SOURCES/
 tar czf geoda.tar.gz GeoDa-1.8/
 cd ..
 rpmbuild -ba SPECS/GeoDa.spec
-
+mv RPMS/x86_64/*.rpm ../
diff --git a/BuildTools/centos/rpm_template/SPECS/GeoDa.spec b/BuildTools/centos/rpm_template/SPECS/GeoDa.spec
index 6c3bb16c5..91cc5a54b 100644
--- a/BuildTools/centos/rpm_template/SPECS/GeoDa.spec
+++ b/BuildTools/centos/rpm_template/SPECS/GeoDa.spec
@@ -28,6 +28,7 @@ install -m 0766 -d $RPM_BUILD_ROOT/usr/local/GeoDa/plugins
 install -m 0766 -d $RPM_BUILD_ROOT/usr/local/GeoDa/gdaldata
 install -m 0766 -d $RPM_BUILD_ROOT/usr/local/GeoDa/web_plugins
 install -m 0755 run.sh $RPM_BUILD_ROOT/usr/local/GeoDa/run.sh
+install -m 0755 cache.sqlite $RPM_BUILD_ROOT/usr/local/GeoDa/cache.sqlite
 install -m 0755 GeoDa $RPM_BUILD_ROOT/usr/local/GeoDa/GeoDa
 install -m 0755 GeoDa.png $RPM_BUILD_ROOT/usr/local/GeoDa/GeoDa.png
 install -m 0755 Resources/* $RPM_BUILD_ROOT/usr/local/GeoDa/Resources/
@@ -45,9 +46,10 @@ install -m 0755 GeoDa.desktop $RPM_BUILD_ROOT/usr/share/applications/GeoDa.deskt
 /usr/local/GeoDa/Resources/*
 /usr/local/GeoDa/plugins/*
 /usr/local/GeoDa/gdaldata/*
-%attr(0767, root, root) /usr/local/GeoDa/basemap_cache/
-%attr(0767, root, root) /usr/local/GeoDa/web_plugins/
-%attr(0767, root, root) /usr/local/GeoDa/web_plugins/cache.sqlite
+/usr/local/GeoDa/web_plugins/*
+%attr(0767, -, -) /usr/local/GeoDa/basemap_cache/
+%attr(0767, -, -) /usr/local/GeoDa/web_plugins/
+%attr(0767, -, -) /usr/local/GeoDa/cache.sqlite
 
 %doc
 
diff --git a/BuildTools/centos/rpmmacros b/BuildTools/centos/rpmmacros
new file mode 100644
index 000000000..6c9d1a24d
--- /dev/null
+++ b/BuildTools/centos/rpmmacros
@@ -0,0 +1,3 @@
+%packager xunli
+%_topdir /home/xun/geoda_trunk/BuildTools/centos/rpm
+%_tmppaath /home/xun/geoda_trunk/BuildTools/centos/rpm/tmp
diff --git a/Explore/MapNewView.cpp b/Explore/MapNewView.cpp
index 0e627143e..9f052ce69 100644
--- a/Explore/MapNewView.cpp
+++ b/Explore/MapNewView.cpp
@@ -589,7 +589,7 @@ void MapCanvas::DrawLayer1()
 				{
 					alpha[i] = 0;
 				} else {
-					alpha[i] = alpha_value;
+					if (alpha[i] !=0 ) alpha[i] = alpha_value;
 				}
 			}
             
@@ -641,7 +641,7 @@ void MapCanvas::DrawLayer1()
 					{
 						alpha_vals[i] = 0;
 					} else {
-						alpha_vals[i] = hl_alpha_value;
+						if (alpha_vals[i] !=0) alpha_vals[i] = hl_alpha_value;
 					}
 				}
 
diff --git a/GeoDamake.centos.opt b/GeoDamake.centos.opt
index 68d39594e..c70c8de71 100644
--- a/GeoDamake.centos.opt
+++ b/GeoDamake.centos.opt
@@ -19,7 +19,7 @@ LIBS = $(WXLIBS) \
         $(GEODA_HOME)/libraries/include/boost/stage/lib/libboost_system.a \
         $(GEODA_HOME)/libraries/lib/libjson_spirit.a \
         -L$(GEODA_HOME)/libraries/lib -lgdal -lcurl -lcares \
-        -L/lib64 -lGL -lGLU -lidn -lrt -lssl -lidn
+        -L/lib64 -lGL -lGLU -lidn -lrt -lssl -lidn -lwebkitgtk-3.0
 
 BOOST_HEADER = -I$(GEODA_HOME)/libraries/include/boost 
 
diff --git a/ShapeOperations/GdaCache.cpp b/ShapeOperations/GdaCache.cpp
index 5f9f9a0d5..5599e171f 100644
--- a/ShapeOperations/GdaCache.cpp
+++ b/ShapeOperations/GdaCache.cpp
@@ -24,7 +24,7 @@ wxString GdaCache::GetFullPath()
     wxString exePath = wxStandardPaths::Get().GetExecutablePath();
     wxFileName exeFile(exePath);
     wxString exeDir = exeFile.GetPathWithSep();
-    exeDir = exeDir + wxFileName::GetPathSeparator() + "cache.sqlite";
+    exeDir = exeDir + "cache.sqlite";
     return exeDir;
 }