diff --git a/bin/openoffice/pdfgen.py b/bin/openoffice/pdfgen.py
index 5d2455d..4273081 100755
--- a/bin/openoffice/pdfgen.py
+++ b/bin/openoffice/pdfgen.py
@@ -84,7 +84,7 @@ except RuntimeException, e:
     sys.stderr.write("An unknown error occured: " + e.Message + "\n")
 
 if doc == None:
-    sys.stderr.write("Could not load doc.\n")
+    sys.stderr.write("OpenOffice could not load the document for conversion. This could indicate an unsupported minetype.\n")
     sys.exit(1)
     
 
diff --git a/config/config.ini b/config/config.ini
index 91d068a..7caf66a 100644
--- a/config/config.ini
+++ b/config/config.ini
@@ -311,7 +311,6 @@ port = default
 
 [user_prefs]
 ; minimum password length on password-setting
-; could be moved into DB-auth-config
 passwordLength = 6
 
 ; apply the minimum password length to admin while creating / editing accounts?
diff --git a/config/dmsDefaults.php b/config/dmsDefaults.php
index b0a979e..054555a 100644
--- a/config/dmsDefaults.php
+++ b/config/dmsDefaults.php
@@ -76,13 +76,14 @@ if (!defined('KT_LIB_DIR')) {
     define('KT_LIB_DIR', KT_DIR . '/lib');
 }
 
-// If not defined, set KT_INSTALL_DIR based on my usual location in the tree
-if (!defined('KT_INSTALL_DIR')) {
-    $installLoc = realpath(dirname(__FILE__) . '/../..');
+// If not defined, set KT_STACK_DIR based on my usual location in the tree
+// TODO: This needs to use a config.ini entry if available
+if (!defined('KT_STACK_DIR')) {
+    $stackLoc = realpath(dirname(__FILE__) . '/../..');
     if (substr(PHP_OS, 0, 3) == 'WIN') {
-            $installLoc = str_replace('\\','/',$installLoc);
+            $stackLoc = str_replace('\\','/',$stackLoc);
     }
-    define('KT_INSTALL_DIR', $installLoc);
+    define('KT_STACK_DIR', $stackLoc);
 }
 
 
diff --git a/lib/upgrades/UpgradeFunctions.inc.php b/lib/upgrades/UpgradeFunctions.inc.php
index 0b4aab0..958842d 100644
--- a/lib/upgrades/UpgradeFunctions.inc.php
+++ b/lib/upgrades/UpgradeFunctions.inc.php
@@ -1040,16 +1040,16 @@ class UpgradeFunctions {
             // externalBinary Section
             $ini->delSection('externalBinary');
             if(OS_WINDOWS){
-                $ini->addItem('externalBinary', 'xls2csv', KT_INSTALL_DIR . '/bin/catdoc/xls2csv.exe', '', 'The following are external binaries that may be used by various parts of knowledgeTree.');
-                $ini->addItem('externalBinary', 'pdftotext', KT_INSTALL_DIR . '/bin/xpdf/pdftotext.exe');
-                $ini->addItem('externalBinary', 'catppt', KT_INSTALL_DIR . '/bin/catdoc/catppt.exe');
-                $ini->addItem('externalBinary', 'pstotext', KT_INSTALL_DIR . '/pstotext');
-                $ini->addItem('externalBinary', 'catdoc', KT_INSTALL_DIR . '/bin/catdoc/catdoc.exe');
-                $ini->addItem('externalBinary', 'antiword', KT_INSTALL_DIR . '/bin/antiword/antiword.exe');
-                $ini->addItem('externalBinary', 'python', KT_INSTALL_DIR . '/python.bat');
-                $ini->addItem('externalBinary', 'java', KT_INSTALL_DIR . '/java/jre/bin/java.exe');
-                $ini->addItem('externalBinary', 'php', KT_INSTALL_DIR . '/php/php.exe');
-                $ini->addItem('externalBinary', 'df', KT_INSTALL_DIR . '/bin/gnuwin32/df.exe');
+                $ini->addItem('externalBinary', 'xls2csv', KT_STACK_DIR . '/bin/catdoc/xls2csv.exe', '', 'The following are external binaries that may be used by various parts of knowledgeTree.');
+                $ini->addItem('externalBinary', 'pdftotext', KT_STACK_DIR . '/bin/xpdf/pdftotext.exe');
+                $ini->addItem('externalBinary', 'catppt', KT_STACK_DIR . '/bin/catdoc/catppt.exe');
+                $ini->addItem('externalBinary', 'pstotext', KT_STACK_DIR . '/bin/pstotext/pstotext.exe');
+                $ini->addItem('externalBinary', 'catdoc', KT_STACK_DIR . '/bin/catdoc/catdoc.exe');
+                $ini->addItem('externalBinary', 'antiword', KT_STACK_DIR . '/bin/antiword/antiword.exe');
+                $ini->addItem('externalBinary', 'python', KT_STACK_DIR . '/openoffice/program/python.bat');
+                $ini->addItem('externalBinary', 'java', KT_STACK_DIR . '/java/jre/bin/java.exe');
+                $ini->addItem('externalBinary', 'php', KT_STACK_DIR . '/php/php.exe');
+                $ini->addItem('externalBinary', 'df', KT_STACK_DIR . '/bin/gnuwin32/df.exe');
 
             } else {
                 $ini->addItem('externalBinary', 'xls2csv', 'xls2csv', '', 'The following are external binaries that may be used by various parts of knowledgeTree.');
@@ -1057,7 +1057,7 @@ class UpgradeFunctions {
                 $ini->addItem('externalBinary', 'catppt', 'catppt');
                 $ini->addItem('externalBinary', 'pstotext', 'pstotext');
                 $ini->addItem('externalBinary', 'catdoc', 'catdoc');
-                $ini->addItem('externalBinary', 'antiword', '');
+                $ini->addItem('externalBinary', 'antiword', 'antiword');
                 $ini->addItem('externalBinary', 'python', 'python');
                 $ini->addItem('externalBinary', 'java', 'java');
                 $ini->addItem('externalBinary', 'php', 'php');
diff --git a/lib/util/ktutil.inc b/lib/util/ktutil.inc
index b265414..a8db060 100644
--- a/lib/util/ktutil.inc
+++ b/lib/util/ktutil.inc
@@ -704,7 +704,7 @@ class KTUtil {
     		case 'externalBinary/python':
     			if (OS_WINDOWS)
 				{
-					$script = $stackPath . '/openoffice/openoffice/program/python.bat';
+					$script = $stackPath . '/openoffice/program/python.bat';
 				}
 				else
 				{
diff --git a/plugins/ktstandard/PDFGeneratorAction.php b/plugins/ktstandard/PDFGeneratorAction.php
index 97a380c..2ed1148 100644
--- a/plugins/ktstandard/PDFGeneratorAction.php
+++ b/plugins/ktstandard/PDFGeneratorAction.php
@@ -58,25 +58,23 @@ class PDFGeneratorAction extends KTDocumentAction {
             'odp', 'otp', 'sxi', 'sti', 'ppt', 'pot', 'sxd', 'odg',
             'otg', 'std', 'asc');
 
+    function getName() {
+        return 'PDF Generator';
+    }
+
     function getDisplayName() {
-        // We need to handle Windows differently - as usual ;)
-        if (substr( PHP_OS, 0, 3) == 'WIN') {
-            $cmdpath = KT_DIR . "/../openoffice/openoffice/program/python.bat";
-            $cmdpath = str_replace( '/','\\',$cmdpath);   
-        } else {
-            $cmdpath = "../openoffice/program/python";
-        }
+		$cmdpath = KTUtil::findCommand('externalBinary/python');
         // Check if openoffice and python are available
-        if(file_exists($cmdpath)) {
+        if($cmdpath != false && file_exists($cmdpath) && !empty($cmdpath)) {
             $sDocType = $this->getMimeExtension();
-            // make sure that the selected document id of an acceptable extension
+            // make sure that the selected document is of an acceptable extension
             foreach($this->aAcceptedMimeTypes as $acceptType){
                 if($acceptType == $sDocType){
                     return _kt('Generate PDF') . "&nbsp;<a href=\"" . KTUtil::ktLink( 'action.php', 'ktstandard.pdf.generate', array( "fDocumentId" => $this->oDocument->getId(), "action" => "pdfdownload") ) . "\" <img src='resources/mimetypes/pdf.png' alt='PDF' border=0/></a>";
                 }
             }
         }
-        return 'PDF Generator';
+        return '';
     }
 
     function form_main() {
@@ -174,6 +172,14 @@ class PDFGeneratorAction extends KTDocumentAction {
         $oDocument = $this->oDocument;
         $oStorage =& KTStorageManagerUtil::getSingleton();
         $oConfig =& KTConfig::getSingleton();
+		$cmdpath = KTUtil::findCommand('externalBinary/python');
+        // Check if openoffice and python are available
+        if($cmdpath == false || !file_exists($cmdpath) || empty($cmdpath)) {
+            // Set the error messsage and redirect to view document
+            $this->addErrorMessage(_kt('An error occurred generating the PDF - please contact the system administrator. Python binary not found.'));
+            redirect(generateControllerLink('viewDocument',sprintf('fDocumentId=%d',$oDocument->getId())));
+            exit(0);          
+        }
 
         //get the actual path to the document on the server
         $sPath = sprintf("%s/%s", $oConfig->get('urls/documentRoot'), $oStorage->getPath($oDocument));
@@ -186,7 +192,7 @@ class PDFGeneratorAction extends KTDocumentAction {
             // We need to handle Windows differently - as usual ;)
             if (substr( PHP_OS, 0, 3) == 'WIN') {
 
-                $cmd = "\"" . KT_DIR . "/../openoffice/openoffice/program/python.bat\" \"". KT_DIR . "/bin/openoffice/pdfgen.py\" \"" . $sPath . "\" \"" . $sTempFilename . "\"";
+                $cmd = "\"" . $cmdpath . "\" \"". KT_DIR . "/bin/openoffice/pdfgen.py\" \"" . $sPath . "\" \"" . $sTempFilename . "\"";
                 $cmd = str_replace( '/','\\',$cmd);   
 
                 // TODO: Check for more errors here
@@ -202,7 +208,7 @@ class PDFGeneratorAction extends KTDocumentAction {
                 // TODO: Check for more errors here
                 // SECURTIY: Ensure $sPath and $sTempFilename are safe or they could be used to excecute arbitrary commands!
                 // Excecute the python script.
-                $cmd = '../openoffice/program/python bin/openoffice/pdfgen.py ' . escapeshellcmd($sPath) . ' ' . escapeshellcmd($sTempFilename);
+                $cmd = $cmdpath . ' ' . KT_DIR . '/bin/openoffice/pdfgen.py ' . escapeshellcmd($sPath) . ' ' . escapeshellcmd($sTempFilename);
                 $res = shell_exec($cmd." 2>&1");
                 //print($res);
                 //print($cmd);
@@ -245,15 +251,15 @@ class PDFGeneratorAction extends KTDocumentAction {
 
             } else {
                 // Set the error messsage and redirect to view document
-                $this->addErrorMessage(_kt('An error occurred generating the PDF - please contact the system administrator.<br>' . $res));
-                redirect(generateControllerLink('viewDocument',sprintf(_kt('fDocumentId=%d'),$oDocument->getId())));
+                $this->addErrorMessage(_kt('An error occurred generating the PDF - please contact the system administrator. ' . $res));
+                redirect(generateControllerLink('viewDocument',sprintf('fDocumentId=%d',$oDocument->getId())));
                 exit(0);  
             }
 
         } else {
             // Set the error messsage and redirect to view document
-            $this->addErrorMessage(_kt('An error occurred generating the PDF - please contact the system administrator.<br>The path to the document did not exist.'));
-            redirect(generateControllerLink('viewDocument',sprintf(_kt('fDocumentId=%d'),$oDocument->getId())));
+            $this->addErrorMessage(_kt('An error occurred generating the PDF - please contact the system administrator. The path to the document did not exist.'));
+            redirect(generateControllerLink('viewDocument',sprintf('fDocumentId=%d',$oDocument->getId())));
             exit(0);  
         }