diff --git a/SensitiveContentPlugin.php b/SensitiveContentPlugin.php
index 8eb7c4a..69315d1 100644
--- a/SensitiveContentPlugin.php
+++ b/SensitiveContentPlugin.php
@@ -160,14 +160,23 @@ EOB;
 
 		$classes = "sensitive-blocker"; //'sensitive-blocker';
 
+		$thumbnail = null;
+		try {
+			$thumbnail = $file->getThumbnail();
+		} catch (Exception $e) {
+			$thumbnail = null;
+		}
+		$thumbWidth = $thumbnail ? $thumbnail->width : 'auto';
+		$thumbHeight = $thumbnail ? $thumbnail->height : 'auto';
+
 		$out->elementStart('div', array(
 			'class'=>'attachment-wrapper',
-			'style'=>'height: ' . $file->getThumbnail()->height . 'px; width: ' . $file->getThumbnail()->width . 'px;'
+			'style'=>'height: ' . $thumbHeight . 'px; width: ' . $thumbWidth . 'px;'
 		)); /*needs height of thumb*/
 		$out->elementStart('div', array(
 			'class'=>$classes,
 			'onclick'=>'toggleSpoiler(event)',
-			'style'=>'height: ' . $file->getThumbnail()->height . 'px; width: ' . $file->getThumbnail()->width . 'px;'
+			'style'=>'height: ' . $thumbHeight . 'px; width: ' . $thumbWidth . 'px;'
 		));
 		$out->raw(' ');
 		$out->elementEnd('div');