Fix broken 32 bit msi caused by name change. Also update version of wix used in the 32 bit build to 3.6

setup/installer/windows/wix-template.xml

@@ -29,9 +29,8 @@
                        Language="1033"
                        Property="NEWPRODUCTFOUND"/>
                </Upgrade>
-               <CustomAction Id="PreventDowngrading" Error="Newer version already installed."/>
+               <CustomAction Id="PreventDowngrading" Error="Newer version of {app} already installed. If you want to downgrade you must uninstall {app} first."/>
 
-               <Property Id="ApplicationFolderName" Value="{appfolder}" />
                <Property Id="APPLICATIONFOLDER">
                   <RegistrySearch Id='calibreInstDir' Type='raw'
                       Root='HKLM' Key="Software\{app}{x64}\Installer" Name="InstallPath" />
@@ -39,6 +38,11 @@
 
                 <Directory Id='TARGETDIR' Name='SourceDir'>
                         <Directory Id='{ProgramFilesFolder}' Name='PFiles'>
+                            <!-- The name must be calibre on 32 bit to ensure
+                                 that the component guids dont change compared
+                                 to previous msis. However, on 64 bit it must
+                                 be Calibre2 otherwise by default it will
+                                 install to C:\Program Files\calibre -->
                             <Directory Id='APPLICATIONFOLDER' Name="{appfolder}" />
 						</Directory>
                         <Directory Id="ProgramMenuFolder">
@@ -171,6 +175,7 @@
                 (i.e. per user installs should work) but left this way as I
                 dont want to deal with the complications 
                 -->
+                <Property Id="ApplicationFolderName" Value="Calibre2" />
                 <Property Id="WixAppFolder" Value="WixPerMachineFolder" />
                 <Property Id="ALLUSERS" Value="1" />
                 <WixVariable Id="WixUISupportPerUser" Value="0" />

setup/installer/windows/wix.py

@@ -16,7 +16,7 @@ if is64bit:
     UPGRADE_CODE = '5DD881FF-756B-4097-9D82-8C0F11D521EA'
     MINVERHUMAN = 'Windows Vista'
 else:
-    WIXP = r'C:\Program Files\Windows Installer XML v3.5'
+    WIXP = r'C:\Program Files\WiX Toolset v3.6'
     UPGRADE_CODE = 'BEB2A80D-E902-4DAD-ADF9-8BD2DA42CFE1'
     MINVERHUMAN = 'Windows XP SP3'
 
@@ -37,7 +37,7 @@ class WixMixIn:
         components = self.get_components_from_files()
         wxs = template.format(
             app                = __appname__,
-            appfolder          = 'Calibre2',
+            appfolder          = 'Calibre2' if is64bit else __appname__,
             version            = __version__,
             upgrade_code       = UPGRADE_CODE,
             ProgramFilesFolder = 'ProgramFiles64Folder' if is64bit else 'ProgramFilesFolder',
@@ -66,7 +66,7 @@ class WixMixIn:
         arch = 'x64' if is64bit else 'x86'
         cmd = [CANDLE, '-nologo', '-arch', arch, '-ext', 'WiXUtilExtension', '-o', wixobj, wxsf]
         self.info(*cmd)
-        subprocess.check_call(cmd)
+        self.run_wix(cmd)
         self.installer = self.j(self.src_root, 'dist')
         if not os.path.exists(self.installer):
             os.makedirs(self.installer)
@@ -82,13 +82,27 @@ class WixMixIn:
                 '-dWixUILicenseRtf='+license,
                 '-dWixUIBannerBmp='+banner,
                 '-dWixUIDialogBmp='+dialog]
-        cmd.append('-sice:ICE60') # No language in dlls warning
+        cmd.extend([
+            '-sice:ICE60',# No language in dlls warning
+            '-sice:ICE61',# Allow upgrading with same version number
+            '-sice:ICE40', # Re-install mode overriden
+            '-sice:ICE69', # Shortcut components are part of a different feature than the files they point to
+        ])
         if self.opts.no_ice:
             cmd.append('-sval')
         if self.opts.verbose:
             cmd.append('-v')
         self.info(*cmd)
-        subprocess.check_call(cmd)
+        self.run_wix(cmd)
+
+    def run_wix(self, cmd):
+        p = subprocess.Popen(cmd, stdout=subprocess.PIPE,
+                              stderr=subprocess.PIPE)
+        ret = p.wait()
+        self.info(p.stdout.read())
+        self.info(p.stderr.read())
+        if ret != 0:
+            sys.exit(1)
 
     def get_components_from_files(self):