I got this before, have you tried bzip2recover /home/user/MyDocs/NITDroid-0.0.9.tar.bz2 ? IT MIGHT work. If that fails, remove all the recxxxxx files, and delete the .bz2 file and putting it back on and try again! If that still fails, which this did for me, i resorted to redownloading it. Worked for me that time round!