diff --git a/app/config/service/loader.yml b/app/config/service/loader.yml
index 583be0c..2fb30a7 100644
--- a/app/config/service/loader.yml
+++ b/app/config/service/loader.yml
@@ -7,7 +7,7 @@ services:
 
     service.ldview:
         class: AppBundle\Service\LDViewService
-        arguments: ['%ldview_bin%', '@oneup_flysystem.media_filesystem', '@oneup_flysystem.ldraw_library_filesystem']
+        arguments: ['%ldview_bin%', '@oneup_flysystem.media_filesystem']
 
     service.loader.rebrickable:
         class: AppBundle\Service\Loader\RebrickableLoaderService
diff --git a/src/AppBundle/Exception/ConvertingFailedException.php b/src/AppBundle/Exception/ConvertingFailedException.php
new file mode 100644
index 0000000..d16c2be
--- /dev/null
+++ b/src/AppBundle/Exception/ConvertingFailedException.php
@@ -0,0 +1,36 @@
+<?php
+
+namespace AppBundle\Exception;
+
+
+use Exception;
+
+class ConvertingFailedException extends \Exception
+{
+    private $filepath;
+
+    public function __construct($filepath = "", $message = "", $code = 0, Exception $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+
+        $this->filepath = $filepath;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getFilepath()
+    {
+        return $this->filepath;
+    }
+
+    /**
+     * @param mixed $filepath
+     */
+    public function setFilepath($filepath)
+    {
+        $this->filepath = $filepath;
+    }
+
+
+}
\ No newline at end of file
diff --git a/src/AppBundle/Exception/FileNotFoundException.php b/src/AppBundle/Exception/FileNotFoundException.php
index dbacf85..3e12a65 100644
--- a/src/AppBundle/Exception/FileNotFoundException.php
+++ b/src/AppBundle/Exception/FileNotFoundException.php
@@ -1,15 +1,9 @@
 <?php
-/**
- * Created by PhpStorm.
- * User: hubnedav
- * Date: 4/6/17
- * Time: 2:31 PM
- */
 
 namespace AppBundle\Exception;
 
 
-class FileNotFoundException extends \Exception
+class FileNotFoundException extends \Symfony\Component\Filesystem\Exception\FileNotFoundException
 {
 
 }
\ No newline at end of file
diff --git a/src/AppBundle/Exception/ParseErrorException.php b/src/AppBundle/Exception/ParseErrorException.php
new file mode 100644
index 0000000..cdfa3fb
--- /dev/null
+++ b/src/AppBundle/Exception/ParseErrorException.php
@@ -0,0 +1,32 @@
+<?php
+
+namespace AppBundle\Exception;
+
+
+class ParseErrorException extends \Exception
+{
+    private $filepath;
+
+    public function __construct($filepath = "", $message = "", $code = 0, Exception $previous = null)
+    {
+        parent::__construct($message, $code, $previous);
+
+        $this->filepath = $filepath;
+    }
+
+    /**
+     * @return mixed
+     */
+    public function getFilepath()
+    {
+        return $this->filepath;
+    }
+
+    /**
+     * @param mixed $filepath
+     */
+    public function setFilepath($filepath)
+    {
+        $this->filepath = $filepath;
+    }
+}
\ No newline at end of file
diff --git a/src/AppBundle/Repository/Rebrickable/InventoryRepository.php b/src/AppBundle/Repository/Rebrickable/InventoryRepository.php
index 6776c3b..0158186 100644
--- a/src/AppBundle/Repository/Rebrickable/InventoryRepository.php
+++ b/src/AppBundle/Repository/Rebrickable/InventoryRepository.php
@@ -2,8 +2,19 @@
 
 namespace AppBundle\Repository\Rebrickable;
 
+use AppBundle\Entity\Rebrickable\Set;
 use AppBundle\Repository\BaseRepository;
 
 class InventoryRepository extends BaseRepository
 {
+    public function findNewestInventoryBySetNumber($number) {
+
+        $queryBuilder = $this->createQueryBuilder('inventory')
+            ->where('inventory.set = :setNumber')
+            ->setParameter('setNumber', $number)
+            ->orderBy('inventory.version','DESC')
+            ->setMaxResults(1);
+
+        return $queryBuilder->getQuery()->getOneOrNullResult();
+    }
 }
diff --git a/src/AppBundle/Service/LDViewService.php b/src/AppBundle/Service/LDViewService.php
index 033dbb5..8f1631f 100644
--- a/src/AppBundle/Service/LDViewService.php
+++ b/src/AppBundle/Service/LDViewService.php
@@ -2,10 +2,13 @@
 
 namespace AppBundle\Service;
 
+use AppBundle\Exception\ConvertingFailedException;
+use AppBundle\Exception\FileNotFoundException;
 use League\Flysystem\File;
 use League\Flysystem\Filesystem;
 use Symfony\Component\Asset\Exception\LogicException;
 use Symfony\Component\Finder\Finder;
+use Symfony\Component\Process\Exception\ProcessFailedException;
 use Symfony\Component\Process\ProcessBuilder;
 
 //TODO enable file overwrite
@@ -33,13 +36,11 @@ class LDViewService
      *
      * @param string     $ldview                    Path to LDView OSMesa binary file
      * @param Filesystem $mediaFilesystem           Filesystem for generated web assets
-     * @param Filesystem $ldrawLibraryFilesystem    Filesystem with ldraw source files library
      */
-    public function __construct($ldview, $mediaFilesystem, $ldrawLibraryFilesystem)
+    public function __construct($ldview, $mediaFilesystem)
     {
         $this->ldview = $ldview;
         $this->mediaFilesystem = $mediaFilesystem;
-        $this->ldrawLibraryFilesystem = $ldrawLibraryFilesystem;
     }
 
     /**
@@ -54,9 +55,10 @@ class LDViewService
      * Convert LDraw model from .dat format to .stl by using LDView
      * stores created file to $stlStorage filesystem.
      *
-     * @param Filesystem $LDrawDir
+     * @param $file
      *
      * @return File
+     * @throws ConvertingFailedException
      */
     public function datToStl($file)
     {
@@ -79,7 +81,7 @@ class LDViewService
 
             // Check if file created successfully
             if (!$this->mediaFilesystem->has($newFile)) {
-                throw new LogicException($newFile.': new file not found'); //TODO
+                throw new ConvertingFailedException($newFile);
             }
         }
 
@@ -90,9 +92,10 @@ class LDViewService
      * Convert LDraw model from .dat format to .stl by using LDView
      * stores created file to $stlStorage filesystem.
      *
-     * @param Filesystem $LDrawDir
+     * @param $file
      *
      * @return File
+     * @throws ConvertingFailedException
      */
     public function datToPng($file)
     {
@@ -124,7 +127,7 @@ class LDViewService
 
             // Check if file created successfully
             if (!$this->mediaFilesystem->has($newFile)) {
-                throw new LogicException($newFile.': new file not found'); //TODO
+                throw new ConvertingFailedException($newFile);
             }
         }
 
@@ -147,7 +150,7 @@ class LDViewService
         $process->run();
 
         if (!$process->isSuccessful()) {
-            throw new LogicException($process->getOutput()); //TODO
+            throw new ProcessFailedException($process); //TODO
         }
     }
 }