Trajectory download failed

Dear All
I got a trajectory downloading failed problem. I used Forcite to run dynamics. I divided the simulation into two stages: production and data collection. After the MS successfully downloaded the production trajectory, I restarted the simulation on the downloaded production trajectory, but the MS stopped several steps before the ending, and didn't download any result. I tried several times, and always had this problem. I also checked the settings in tool->options->jobs, the "Download results automatically on job completion" option was checked. I'm using MS 7.0.
Any suggestion would be appreciated!

Regards,
Jingjing