backup script does not start service after backup

I have a scheduled task that runs the following script on my ServiceDesk server every day at 1 a.m.:

cd c:\adventnet\me\servicedesk\bin

call sd_service.bat -p server\default\conf\wrapper.conf

call backupdata.bat

call sd_service.bat -t server\default\conf\wrapper.conf

I know that the last line of the script is supposed to restart the service, but it does not work. Every day when I come in to work the service has not restarted. When I log into the server, the service appears to be attempting to start, but is not successful. The only fix I�ve found is to reboot the server.

Has anyone else experienced this?

Thanks,
Carolyn