Script doesn't complete via Cron

[Gerard Samuel]

Script ->
--------
#!/bin/sh
#
# To roll up a zip file of source code
#

date=`date '+%Y-%m-%d'`

cd ~/temp
rm -rf foo_dev foo.zip
export CVS_RSH=ssh
export CVSROOT=:ext:xxx at xxx.xxx.xxx:/xxx/yyy/zzz
cvs -Q export -D $date -d foo_dev foo
zip -q -r foo foo_dev
scp -q foo.zip server_name:
rm -rf foo_dev foo.zip

------

Cron job ->
------
# export, zip up and scp foo source to server_name
17      14      *       *       *       /home/bar/bin/export-foo      
2>      /dev/null > /dev/null
------

When I execute the script by hand, it completes without any problems.
When I let a cronjob handle it, it doesn't scp the zip file to the 
remote server.
I don't get any errors in /var/log/auth.log or /var/log/messages
Anyone has any ideas on how to fix this up?

Thanks