Index: src/images.py
===================================================================
--- src/images.py	(Revision 51251)
+++ src/images.py	(Arbeitskopie)
@@ -165,7 +165,10 @@
 					break
 
 				uncompressed_data = decompressor.decompress(compressed_data)
-				fout.write(uncompressed_data)
+				if re.match("^[\\x00]*$", uncompressed_data):
+					fout.seek(len(uncompressed_data), os.SEEK_CUR)
+				else:
+					fout.write(uncompressed_data)
 				progress(fin.tell(), total_size)
 				del compressed_data
 				del uncompressed_data