when i select  1) Download/select an extension i got this error
Traceback (most recent call last):
  File "cromos.py", line 5, in <module>
    from libs.download import Download
  File "/root/cromos/libs/download.py", line 12, in <module>
    from libs.build import Build
  File "/root/cromos/libs/build.py", line 4, in <module>
    from drive import Drive
  File "/root/cromos/libs/drive.py", line 9, in <module>
    import dropbox
ImportError: No module named dropbox