diff --git a/XScreenSaverWin.iss b/XScreenSaverWin.iss
index 77f9802..1aad9d3 100644
--- a/XScreenSaverWin.iss
+++ b/XScreenSaverWin.iss
@@ -7,7 +7,7 @@
 ; (To generate a new GUID, click Tools | Generate GUID inside the IDE.)
 AppId={{B7914227-CD94-4B6F-859C-E3823C9552DA}
 AppName=XScreenSaver for Windows
-AppVerName=XScreenSaver for Windows v0.77
+AppVerName=XScreenSaver for Windows v0.78
 AppPublisher=Katayama Hirofumi MZ
 AppPublisherURL=http://katahiromz.web.fc2.com/xscreensaverwin/eindex.html
 AppSupportURL=http://katahiromz.web.fc2.com/xscreensaverwin/eindex.html
diff --git a/debughelper/debughelper.rc b/debughelper/debughelper.rc
index 1bb814c..89aa173 100644
--- a/debughelper/debughelper.rc
+++ b/debughelper/debughelper.rc
@@ -21,8 +21,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 // Version Info
 
 VS_VERSION_INFO VERSIONINFO
-FILEVERSION     0, 7, 7, 0
-PRODUCTVERSION  0, 7, 7, 0
+FILEVERSION     0, 7, 8, 0
+PRODUCTVERSION  0, 7, 8, 0
 FILEOS          VOS_NT_WINDOWS32
 FILETYPE        VFT_APP
 BEGIN
@@ -33,10 +33,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Katayama Hirofumi MZ\0"
             VALUE "FileDescription", "XScreenSaverWin debughelper\0"
-            VALUE "FileVersion", "0.77\0"
+            VALUE "FileVersion", "0.78\0"
             VALUE "LegalCopyright", "Copyright (C) 2015 Katayama Hirofumi MZ.\0"
             VALUE "ProductName", "XScreenSaverWin\0"
-            VALUE "ProductVersion", "0.77\0"
+            VALUE "ProductVersion", "0.78\0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/non-wgl/non-wgl.c b/non-wgl/non-wgl.c
index 6d33db6..476ba73 100644
--- a/non-wgl/non-wgl.c
+++ b/non-wgl/non-wgl.c
@@ -93,7 +93,10 @@ void ss_term(void)
     free(ss.modeinfo.colors);
     free(ss.modeinfo.pixels);
     XFreeGC(ss.modeinfo.dpy, ss.modeinfo.gc);
-    hack_free(&ss.modeinfo);
+    if (hack_free != NULL)
+    {
+        hack_free(&ss.modeinfo);
+    }
     ReleaseDC(ss.hwnd, ss.hdc);
     DeleteObject(ss.hbmScreenShot);
     CloseHandle(g_hMapping);
diff --git a/random/random.rc b/random/random.rc
index 954b33d..f218479 100644
--- a/random/random.rc
+++ b/random/random.rc
@@ -9,8 +9,8 @@
 // Version Info
 
 VS_VERSION_INFO VERSIONINFO
-FILEVERSION     0, 7, 7, 0
-PRODUCTVERSION  0, 7, 7, 0
+FILEVERSION     0, 7, 8, 0
+PRODUCTVERSION  0, 7, 8, 0
 FILEOS          VOS_NT_WINDOWS32
 FILETYPE        VFT_APP
 BEGIN
@@ -21,10 +21,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Katayama Hirofumi MZ\0"
             VALUE "FileDescription", "XScreenSaverWin random screensaver\0"
-            VALUE "FileVersion", "0.77\0"
+            VALUE "FileVersion", "0.78\0"
             VALUE "LegalCopyright", "Copyright (C) 2015 Katayama Hirofumi MZ.\0"
             VALUE "ProductName", "XScreenSaverWin\0"
-            VALUE "ProductVersion", "0.77\0"
+            VALUE "ProductVersion", "0.78\0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/screenhack.rc b/screenhack.rc
index 0795987..bae0d2c 100644
--- a/screenhack.rc
+++ b/screenhack.rc
@@ -79,8 +79,8 @@ FONT 8, "Arial"
 // Version Info
 
 VS_VERSION_INFO VERSIONINFO
-FILEVERSION     0, 7, 7, 0
-PRODUCTVERSION  0, 7, 7, 0
+FILEVERSION     0, 7, 8, 0
+PRODUCTVERSION  0, 7, 8, 0
 FILEOS          VOS_NT_WINDOWS32
 FILETYPE        VFT_APP
 BEGIN
@@ -91,10 +91,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Katayama Hirofumi MZ\0"
             VALUE "FileDescription", "XScreenSaverWin screenhack\0"
-            VALUE "FileVersion", "0.77\0"
+            VALUE "FileVersion", "0.78\0"
             VALUE "LegalCopyright", "Copyright (C) 2015 Katayama Hirofumi MZ.\0"
             VALUE "ProductName", "XScreenSaverWin\0"
-            VALUE "ProductVersion", "0.77\0"
+            VALUE "ProductVersion", "0.78\0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/wgl/wgl.c b/wgl/wgl.c
index 57a4655..891053b 100644
--- a/wgl/wgl.c
+++ b/wgl/wgl.c
@@ -91,7 +91,10 @@ void ss_term(void)
 {
     free(ss.modeinfo.colors);
     free(ss.modeinfo.pixels);
-    hack_free(&ss.modeinfo);
+    if (hack_free != NULL)
+    {
+        hack_free(&ss.modeinfo);
+    }
     ReleaseDC(ss.hwnd, ss.hdc);
     DeleteObject(ss.hbmScreenShot);
     CloseHandle(g_hMapping);
diff --git a/xlockmore.rc b/xlockmore.rc
index 3f7b61d..c1a12d0 100644
--- a/xlockmore.rc
+++ b/xlockmore.rc
@@ -79,8 +79,8 @@ FONT 8, "Arial"
 // Version Info
 
 VS_VERSION_INFO VERSIONINFO
-FILEVERSION     0, 7, 7, 0
-PRODUCTVERSION  0, 7, 7, 0
+FILEVERSION     0, 7, 8, 0
+PRODUCTVERSION  0, 7, 8, 0
 FILEOS          VOS_NT_WINDOWS32
 FILETYPE        VFT_APP
 BEGIN
@@ -91,10 +91,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Katayama Hirofumi MZ\0"
             VALUE "FileDescription", "XScreenSaverWin xlockmore\0"
-            VALUE "FileVersion", "0.77\0"
+            VALUE "FileVersion", "0.78\0"
             VALUE "LegalCopyright", "Copyright (C) 2015 Katayama Hirofumi MZ.\0"
             VALUE "ProductName", "XScreenSaverWin\0"
-            VALUE "ProductVersion", "0.77\0"
+            VALUE "ProductVersion", "0.78\0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/xscreensaver-text/xscreensaver-text.c b/xscreensaver-text/xscreensaver-text.c
index 7285745..481871e 100644
--- a/xscreensaver-text/xscreensaver-text.c
+++ b/xscreensaver-text/xscreensaver-text.c
@@ -36,7 +36,7 @@ const char *saver_key = "Software\\Katayama Hirofumi MZ\\%s";
 
 void show_version(void)
 {
-    fprintf(stderr, "XScreenSaver for Windows v0.77 text client utility\n");
+    fprintf(stderr, "XScreenSaver for Windows v0.78 text client utility\n");
     fprintf(stderr, "Written by Katayama Hirofumi MZ\n");
 }
 
diff --git a/xscreensaver-text/xscreensaver-text.rc b/xscreensaver-text/xscreensaver-text.rc
index 079296e..fd11d97 100644
--- a/xscreensaver-text/xscreensaver-text.rc
+++ b/xscreensaver-text/xscreensaver-text.rc
@@ -9,8 +9,8 @@
 // Version Info
 
 VS_VERSION_INFO VERSIONINFO
-FILEVERSION     0, 7, 7, 0
-PRODUCTVERSION  0, 7, 7, 0
+FILEVERSION     0, 7, 8, 0
+PRODUCTVERSION  0, 7, 8, 0
 FILEOS          VOS_NT_WINDOWS32
 FILETYPE        VFT_APP
 BEGIN
@@ -21,10 +21,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Katayama Hirofumi MZ\0"
             VALUE "FileDescription", "XScreenSaverWin text\0"
-            VALUE "FileVersion", "0.77\0"
+            VALUE "FileVersion", "0.78\0"
             VALUE "LegalCopyright", "Copyright (C) 2015 Katayama Hirofumi MZ.\0"
             VALUE "ProductName", "XScreenSaverWin\0"
-            VALUE "ProductVersion", "0.77\0"
+            VALUE "ProductVersion", "0.78\0"
         END
     END
     BLOCK "VarFileInfo"
diff --git a/xscreensaver/xscreensaver.rc b/xscreensaver/xscreensaver.rc
index a11b4c8..0f437fc 100644
--- a/xscreensaver/xscreensaver.rc
+++ b/xscreensaver/xscreensaver.rc
@@ -16,8 +16,8 @@ LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 // Version Info
 
 VS_VERSION_INFO VERSIONINFO
-FILEVERSION     0, 7, 7, 0
-PRODUCTVERSION  0, 7, 7, 0
+FILEVERSION     0, 7, 8, 0
+PRODUCTVERSION  0, 7, 8, 0
 FILEOS          VOS_NT_WINDOWS32
 FILETYPE        VFT_APP
 BEGIN
@@ -28,10 +28,10 @@ BEGIN
         BEGIN
             VALUE "CompanyName", "Katayama Hirofumi MZ\0"
             VALUE "FileDescription", "XScreenSaverWin\0"
-            VALUE "FileVersion", "0.77\0"
+            VALUE "FileVersion", "0.78\0"
             VALUE "LegalCopyright", "Copyright (C) 2015 Katayama Hirofumi MZ.\0"
             VALUE "ProductName", "XScreenSaverWin\0"
-            VALUE "ProductVersion", "0.77\0"
+            VALUE "ProductVersion", "0.78\0"
         END
     END
     BLOCK "VarFileInfo"
@@ -56,7 +56,7 @@ END
 
 1 DIALOGEX 0, 0, 215, 180
 STYLE DS_MODALFRAME | DS_CENTER | WS_POPUP | WS_CAPTION | WS_SYSMENU
-CAPTION "XScreenSaver for Windows v0.77"
+CAPTION "XScreenSaver for Windows v0.78"
 LANGUAGE LANG_ENGLISH, SUBLANG_ENGLISH_US
 FONT 9, "Arial"
 {