Received the Following Error after uploading from FTP.

I'm using Main.

Error is:

Traceback (most recent call last):
  File "/galaxy/home/g2main/galaxy_main/tools/data_source/upload.py", line 384, in <module>
    __main__()
  File "/galaxy/home/g2main/galaxy_main/tools/data_source/upload.py", line 373, in __main__
    add_file( dataset, registry, json_file, output_path )
  File "/galaxy/home/g2main/galaxy_main/tools/data_source/upload.py", line 134, in add_file
    chunk = gzipped_file.read( CHUNK_SIZE )
  File "/usr/lib/python2.7/gzip.py", line 256, in read
    self._read(readsize)
  File "/usr/lib/python2.7/gzip.py", line 307, in _read
    uncompress = self.decompress.decompress(buf)
zlib.error: Error -3 while decompressing: invalid stored block lengths

Thank you for your assistance.