Fix for Issue #538.
diff --git a/system/libraries/Image_lib.php b/system/libraries/Image_lib.php
index 8902f52..7f90512 100644
--- a/system/libraries/Image_lib.php
+++ b/system/libraries/Image_lib.php
@@ -208,7 +208,7 @@
 		}
 		else
 		{
-			if (strpos($this->new_image, '/') === FALSE)
+			if (strpos($this->new_image, '/') === FALSE AND strpos($this->new_image, '\\') === FALSE)
 			{
 				$this->dest_folder = $this->source_folder;
 				$this->dest_image = $this->new_image;