diff --git a/Darwin/KVASD-installer/KVASD-installer.xcodeproj/project.pbxproj b/Darwin/KVASD-installer/KVASD-installer.xcodeproj/project.pbxproj
index c400d5949..a23b5ef65 100644
--- a/Darwin/KVASD-installer/KVASD-installer.xcodeproj/project.pbxproj
+++ b/Darwin/KVASD-installer/KVASD-installer.xcodeproj/project.pbxproj
@@ -259,7 +259,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "KVASD-installer/KVASD-installer-Prefix.pch";
 				INFOPLIST_FILE = "KVASD-installer/KVASD-installer-Info.plist";
-				MACOSX_DEPLOYMENT_TARGET = "";
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};
@@ -273,7 +273,7 @@
 				GCC_PRECOMPILE_PREFIX_HEADER = YES;
 				GCC_PREFIX_HEADER = "KVASD-installer/KVASD-installer-Prefix.pch";
 				INFOPLIST_FILE = "KVASD-installer/KVASD-installer-Info.plist";
-				MACOSX_DEPLOYMENT_TARGET = "";
+				MACOSX_DEPLOYMENT_TARGET = 10.7;
 				PRODUCT_NAME = "$(TARGET_NAME)";
 				WRAPPER_EXTENSION = app;
 			};
diff --git a/Darwin/KVASD-installer/KVASD-installer/MainMenu.xib b/Darwin/KVASD-installer/KVASD-installer/MainMenu.xib
index 77c3b8b6a..7b643ac24 100644
--- a/Darwin/KVASD-installer/KVASD-installer/MainMenu.xib
+++ b/Darwin/KVASD-installer/KVASD-installer/MainMenu.xib
@@ -1,6 +1,7 @@
 <?xml version="1.0" encoding="UTF-8" standalone="no"?>
 <document type="com.apple.InterfaceBuilder3.Cocoa.XIB" version="3.0" toolsVersion="4514" systemVersion="12F45" targetRuntime="MacOSX.Cocoa" propertyAccessControl="none" useAutolayout="YES">
     <dependencies>
+        <deployment version="1070" defaultVersion="1070" identifier="macosx"/>
         <plugIn identifier="com.apple.InterfaceBuilder.CocoaPlugin" version="4514"/>
     </dependencies>
     <objects>
@@ -125,7 +126,7 @@
                             <action selector="doChooseTarget:" target="494" id="T3v-Fi-ceL"/>
                         </connections>
                     </button>
-                    <button toolTip="Click to process all the selected WSJT-X application bundles you have selected." verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="WgE-a2-qYH">
+                    <button toolTip="Click to process all the WSJT-X application bundles you have selected." verticalHuggingPriority="750" translatesAutoresizingMaskIntoConstraints="NO" id="WgE-a2-qYH">
                         <rect key="frame" x="430" y="63" width="46" height="25"/>
                         <autoresizingMask key="autoresizingMask" flexibleMaxX="YES" flexibleMinY="YES"/>
                         <buttonCell key="cell" type="squareTextured" title="Install" bezelStyle="texturedSquare" imagePosition="overlaps" alignment="center" enabled="NO" state="on" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="Wul-Wc-vif">
@@ -144,7 +145,7 @@
                         <rect key="frame" x="20" y="184" width="456" height="288"/>
                         <autoresizingMask key="autoresizingMask"/>
                         <string key="toolTip">Please read the agreement and tick the "Agree" checkbox below if you accept the terms and wish to continue with the installation.</string>
-                        <clipView key="contentView" id="98d-J5-d83">
+                        <clipView key="contentView" id="hfA-a7-tlo">
                             <rect key="frame" x="1" y="1" width="439" height="286"/>
                             <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
                             <subviews>
@@ -176,7 +177,7 @@
                         <constraints>
                             <constraint firstAttribute="height" constant="37" id="hQV-aJ-MXM"/>
                         </constraints>
-                        <textFieldCell key="cell" sendsActionOnEndEditing="YES" alignment="center" title="Use &quot;Choose target ...&quot; to pick WSJT-X application bundles to install KVASD into or simply drop them onto this window" id="3OK-wt-WuN">
+                        <textFieldCell key="cell" sendsActionOnEndEditing="YES" alignment="center" title="Use &quot;Choose target ...&quot; to pick WSJT-X application bundles to install KVASD into" id="3OK-wt-WuN">
                             <font key="font" metaFont="system"/>
                             <color key="textColor" name="controlTextColor" catalog="System" colorSpace="catalog"/>
                             <color key="backgroundColor" name="controlColor" catalog="System" colorSpace="catalog"/>
@@ -203,9 +204,12 @@
                                         </connections>
                                     </buttonCell>
                                 </button>
-                                <button verticalHuggingPriority="750" misplaced="YES" tag="-1" translatesAutoresizingMaskIntoConstraints="NO" id="ylZ-OO-wid">
+                                <button verticalHuggingPriority="750" tag="-1" translatesAutoresizingMaskIntoConstraints="NO" id="ylZ-OO-wid">
                                     <rect key="frame" x="179" y="5" width="102" height="32"/>
                                     <autoresizingMask key="autoresizingMask"/>
+                                    <constraints>
+                                        <constraint firstAttribute="width" constant="90" id="x77-Gu-2d1"/>
+                                    </constraints>
                                     <buttonCell key="cell" type="push" title="Print ..." bezelStyle="rounded" alignment="center" enabled="NO" borderStyle="border" imageScaling="proportionallyDown" inset="2" id="2cB-RL-2Da">
                                         <behavior key="behavior" pushIn="YES" lightByBackground="YES" lightByGray="YES"/>
                                         <font key="font" metaFont="system"/>
@@ -214,9 +218,12 @@
                                         <action selector="doPrint:" target="494" id="879-hA-tbm"/>
                                     </connections>
                                 </button>
-                                <button misplaced="YES" tag="-1" translatesAutoresizingMaskIntoConstraints="NO" id="art-4p-gjI">
+                                <button tag="-1" translatesAutoresizingMaskIntoConstraints="NO" id="art-4p-gjI">
                                     <rect key="frame" x="347" y="-1" width="102" height="47"/>
                                     <autoresizingMask key="autoresizingMask"/>
+                                    <constraints>
+                                        <constraint firstAttribute="width" constant="98" id="tcI-KQ-cBc"/>
+                                    </constraints>
                                     <buttonCell key="cell" type="check" title="Agree" bezelStyle="regularSquare" imagePosition="left" enabled="NO" inset="2" id="NP4-SZ-zup">
                                         <behavior key="behavior" changeContents="YES" doesNotDimImage="YES" lightByContents="YES"/>
                                         <font key="font" metaFont="system"/>
diff --git a/Darwin/KVASD-installer/KVASD-installer/WSJTAppDelegate.applescript b/Darwin/KVASD-installer/KVASD-installer/WSJTAppDelegate.applescript
index b92befa87..8a024a4d7 100644
--- a/Darwin/KVASD-installer/KVASD-installer/WSJTAppDelegate.applescript
+++ b/Darwin/KVASD-installer/KVASD-installer/WSJTAppDelegate.applescript
@@ -192,29 +192,33 @@ script WSJTAppDelegate
 	end applicationShouldTerminate_
     
     --
-    -- NSDraggingDestination (NSWindow Delgate) Protocol
+    -- NSDraggingDestination (NSWindow Delgate) Protocol (Not working on 10.7)
     --
     
     -- Accept Generic drag&drop sources
-    on draggingEntered_(sender)
-        return current application's NSDragOperationGeneric
-    end draggingEntered_
+--    on draggingEntered_(sender)
+--        return current application's NSDragOperationGeneric
+--    end draggingEntered_
     
     -- Process a drop on our window
-    on performDragOperation_(sender)
-        set pb to sender's draggingPasteboard()
-        if pb's types() as list contains current application's NSURLPboardType then
-            set options to {NSPasteboardURLReadingContentsConformToTypesKey:{"com.apple.application-bundle"}}
-            repeat with u in pb's readObjectsForClasses_options_({current application's |NSURL|},options)
-                copy u's |path| to end of bundlesToProcess
-            end repeat
-            if bundlesToProcess ≠ {} and licenceAgreed then
-                installButton's setEnabled_(true)
-            end if
-            return true
-        end if
-        return false
-    end performDragOperation_
+--    on performDragOperation_(sender)
+--        try
+--            set pb to sender's draggingPasteboard()
+--            if pb's types() as list contains current application's NSURLPboardType then
+--                set options to {NSPasteboardURLReadingContentsConformToTypesKey:{"com.apple.application-bundle"}}
+--                repeat with u in pb's readObjectsForClasses_options_({current application's |NSURL|},options)
+--                    copy u's |path| to end of bundlesToProcess
+--                end repeat
+--                if bundlesToProcess ≠ {} and licenceAgreed then
+--                    installButton's setEnabled_(true)
+--                end if
+--                return true
+--            end if
+--        on error errorString
+--            abort(errorString)
+--        end try
+--        return false
+--    end performDragOperation_
     
     --
     -- UI handlers
@@ -286,20 +290,28 @@ script WSJTAppDelegate
 
     -- Install button handler
     on doInstall_(sender)
-        process()
-        set bundlesToProcess to {}
-        installButton's setEnabled_(false)
+        try
+            process()
+            set bundlesToProcess to {}
+            installButton's setEnabled_(false)
+        on error errorString
+            abort(errorString)
+        end try
     end doInstall_
 
     -- handler called on eulaTextView scroll or view changes
     -- enables agree/install button once the bottom is reached
     on viewChanged_(aNotification)
-        set dr to eulaTextView's |bounds| as record
-        set vdr to eulaTextView's visibleRect as record
-        if height of |size| of dr - (y of origin of vdr + height of |size| of vdr) is less than or equal to 0 ¬
-                and not licenceAgreed then
-            agreeCheckBox's setEnabled_(true)
-        end if
+        try
+            set dr to eulaTextView's |bounds| as record
+            set vdr to eulaTextView's visibleRect as record
+            if height of |size| of dr - (y of origin of vdr + height of |size| of vdr) is less than or equal to 0 ¬
+                    and not licenceAgreed then
+                agreeCheckBox's setEnabled_(true)
+            end if
+        on error errorString
+            abort(errorString)
+        end try
     end viewChanged
 
     -- Abort handler
diff --git a/Darwin/ReadMe.txt b/Darwin/ReadMe.txt
index 08db29b28..dcd601ebc 100644
--- a/Darwin/ReadMe.txt
+++ b/Darwin/ReadMe.txt
@@ -57,10 +57,9 @@ The install DMG includes an installer tool KVASD-installer that allows you to in
 KVASD into your WSJT-X application.  When you run KVASD-installer you must have a 
 functioning Internet connection since it downloads KVASD during the installation.
 
-Run KVASD-installer and review the license terms then either drag the newly installed 
-WSJT-X application onto it or use the "Choose target …" button to select the WSJT-X 
-application you have just installed then; click "Install" to inject KVASD into the
-WSJT-X application.
+Run KVASD-installer and review the license terms then use the "Choose target …" button
+to select the WSJT-X application you have just installed then; click "Install" to inject
+KVASD into the WSJT-X application.
 
 You need to configure your sound card.   Visit Applications > Utilities > Audio MIDI 
 Setup and select your sound card and then set Format to be "48000Hz 2ch-16bit" for 
diff --git a/contrib/Darwin/KVASD-installer.app/Contents/Info.plist b/contrib/Darwin/KVASD-installer.app/Contents/Info.plist
index 7ff85104c..2fb0078a9 100644
--- a/contrib/Darwin/KVASD-installer.app/Contents/Info.plist
+++ b/contrib/Darwin/KVASD-installer.app/Contents/Info.plist
@@ -52,7 +52,7 @@
 	<key>LSApplicationCategoryType</key>
 	<string>public.app-category.utilities</string>
 	<key>LSMinimumSystemVersion</key>
-	<string></string>
+	<string>10.7</string>
 	<key>NSHumanReadableCopyright</key>
 	<string>Created by Bill Somerville (G4WJS) on 12/11/2014.
 
diff --git a/contrib/Darwin/KVASD-installer.app/Contents/MacOS/KVASD-installer b/contrib/Darwin/KVASD-installer.app/Contents/MacOS/KVASD-installer
index d016d456e..248a9b3f7 100755
Binary files a/contrib/Darwin/KVASD-installer.app/Contents/MacOS/KVASD-installer and b/contrib/Darwin/KVASD-installer.app/Contents/MacOS/KVASD-installer differ
diff --git a/contrib/Darwin/KVASD-installer.app/Contents/Resources/MainMenu.nib b/contrib/Darwin/KVASD-installer.app/Contents/Resources/MainMenu.nib
index 90a03af9a..e8b411ac5 100644
Binary files a/contrib/Darwin/KVASD-installer.app/Contents/Resources/MainMenu.nib and b/contrib/Darwin/KVASD-installer.app/Contents/Resources/MainMenu.nib differ
diff --git a/contrib/Darwin/KVASD-installer.app/Contents/Resources/WSJTAppDelegate.scpt b/contrib/Darwin/KVASD-installer.app/Contents/Resources/WSJTAppDelegate.scpt
index 91841ae6f..a74a4495b 100644
Binary files a/contrib/Darwin/KVASD-installer.app/Contents/Resources/WSJTAppDelegate.scpt and b/contrib/Darwin/KVASD-installer.app/Contents/Resources/WSJTAppDelegate.scpt differ