Analysis not found

Im new on Echo Nest, and im programming a script to analyze a few mp3 files in a directory, i uploaded all my files and analized them but now one of them its causing me trouble this is what happens now: en-ffmpeg -i "0.mp3" -y -ac 2 -ar 44100 "/var/folders/xr/t56l1lbj6sbgh21kfxgnlv_40000gn/T/tmp2JHqyh.wav" Computed MD5 of file is afd09da8b0aeda6557dce2a3e1cb20ba Probing for existing analysis Analysis not found. Uploading... Traceback (most recent call last): File "", line 1, in File "", line 4, in analizador File "build/bdist.macosx-10.7-intel/egg/echonest/remix/audio.py", line 940, in init File "build/bdist.macosx-10.7-intel/egg/echonest/remix/audio.py", line 126, in init File "build/bdist.macosx-10.7-intel/egg/pyechonest/track.py", line 142, in get_analysis Exception: Failed to create track analysis.

All the other files worked correctly