diff --git a/lib/Doctrine/ORM/Tools/Console/Command/ConvertDoctrine1SchemaCommand.php b/lib/Doctrine/ORM/Tools/Console/Command/ConvertDoctrine1SchemaCommand.php
index ae297c84f..2af1eb04b 100644
--- a/lib/Doctrine/ORM/Tools/Console/Command/ConvertDoctrine1SchemaCommand.php
+++ b/lib/Doctrine/ORM/Tools/Console/Command/ConvertDoctrine1SchemaCommand.php
@@ -134,16 +134,16 @@ EOT
         }
 
         $converter = new ConvertDoctrine1Schema($fromPaths);
-        $metadatas = $converter->getMetadatas();
+        $metadata = $converter->getMetadata();
 
         if ($metadatas) {
             $output->write(PHP_EOL);
 
-            foreach ($metadatas as $metadata) {
-                $output->write(sprintf('Processing entity "<info>%s</info>"', $metadata->name) . PHP_EOL);
+            foreach ($metadata as $class) {
+                $output->write(sprintf('Processing entity "<info>%s</info>"', $class->name) . PHP_EOL);
             }
 
-            $exporter->setMetadatas($metadatas);
+            $exporter->setMetadata($metadata);
             $exporter->export();
 
             $output->write(PHP_EOL . sprintf(
diff --git a/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php b/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php
index c350ca045..6770e6360 100644
--- a/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php
+++ b/lib/Doctrine/ORM/Tools/Console/Command/ConvertMappingCommand.php
@@ -97,8 +97,8 @@ EOT
         }
 
         $cmf = new DisconnectedClassMetadataFactory($em);
-        $metadatas = $cmf->getAllMetadata();
-        $metadatas = MetadataFilter::filter($metadatas, $input->getOption('filter'));
+        $metadata = $cmf->getAllMetadata();
+        $metadata = MetadataFilter::filter($metadata, $input->getOption('filter'));
 
         // Process destination directory
         if ( ! is_dir($destPath = $input->getArgument('dest-path'))) {
@@ -132,12 +132,12 @@ EOT
             }
         }
 
-        if (count($metadatas)) {
-            foreach ($metadatas as $metadata) {
-                $output->write(sprintf('Processing entity "<info>%s</info>"', $metadata->name) . PHP_EOL);
+        if (count($metadata)) {
+            foreach ($metadata as $class) {
+                $output->write(sprintf('Processing entity "<info>%s</info>"', $class->name) . PHP_EOL);
             }
 
-            $exporter->setMetadatas($metadatas);
+            $exporter->setMetadata($metadata);
             $exporter->export();
 
             $output->write(PHP_EOL . sprintf(
diff --git a/lib/Doctrine/ORM/Tools/ConvertDoctrine1Schema.php b/lib/Doctrine/ORM/Tools/ConvertDoctrine1Schema.php
index a1fd97bb1..d0eb5e9f0 100644
--- a/lib/Doctrine/ORM/Tools/ConvertDoctrine1Schema.php
+++ b/lib/Doctrine/ORM/Tools/ConvertDoctrine1Schema.php
@@ -41,7 +41,8 @@ class ConvertDoctrine1Schema
     private $_legacyTypeMap = array(
         // TODO: This list may need to be updated
         'clob' => 'text',
-        'timestamp' => 'datetime'
+        'timestamp' => 'datetime',
+        'enum' => 'string'
     );
 
     /**
@@ -238,6 +239,7 @@ class ConvertDoctrine1Schema
                 if (isset($relation['refClass'])) {
                     $type = 'many';
                     $foreignType = 'many';
+                    $joinColumns = array();
                 } else {
                     $type = isset($relation['type']) ? $relation['type'] : 'one';
                     $foreignType = isset($relation['foreignType']) ? $relation['foreignType'] : 'many';
diff --git a/lib/Doctrine/ORM/Tools/EntityRepositoryGenerator.php b/lib/Doctrine/ORM/Tools/EntityRepositoryGenerator.php
index 82c18035e..74740dbe4 100644
--- a/lib/Doctrine/ORM/Tools/EntityRepositoryGenerator.php
+++ b/lib/Doctrine/ORM/Tools/EntityRepositoryGenerator.php
@@ -76,6 +76,8 @@ class <className> extends EntityRepository
             mkdir($dir, 0777, true);
         }
 
-        file_put_contents($path, $code);
+        if ( ! file_exists($path)) {
+            file_put_contents($path, $code);
+        }
     }
 }
\ No newline at end of file
diff --git a/lib/Doctrine/ORM/Tools/ToolsException.php b/lib/Doctrine/ORM/Tools/ToolsException.php
index db13d862a..f7ed87105 100644
--- a/lib/Doctrine/ORM/Tools/ToolsException.php
+++ b/lib/Doctrine/ORM/Tools/ToolsException.php
@@ -2,8 +2,12 @@
 
 namespace Doctrine\ORM\Tools;
 
-class ToolsException extends ORMException {
-    public static function couldNotMapDoctrine1Type($type) {
+use Doctrine\ORM\ORMException;
+
+class ToolsException extends ORMException
+{
+    public static function couldNotMapDoctrine1Type($type)
+    {
         return new self("Could not map doctrine 1 type '$type'!");
     }
 }
\ No newline at end of file