Software :: Grub2 - Win 7 Menu Entries Not Found?

I have been reading this but could not resolve my issue: [URL]. The problem is as follows. I got a samsung laptop and there is some kind of recovery utility installed. After installing Ubuntu I get too windows grub entries, one is called Windows Vista (loader) on /dev/sda1 and the other one is Windows 7 (loader) on /dev/sda2. The latter is correct and the first one is something that I'd rather not have active at all in the grub menu. Both of them are of course created by 30_os-prober in /etc/grub.d. I figured that I would most likely prefer a custom entry for Windows 7 and remove the x flag from 30_os-prober. I tried to create a file 50_windows7 in a described manner:

#! /bin/sh -e
echo "Adding Windows 43_custom" >&2
menuentry "Windows Vista 43_custom" {
insmod ntfs
set root=(hd0,2)
search --no-floppy --fs-uuid --set 7cecddfbecddb01e
chainloader +1 }

Unfortunately during update-grub I get following:
Found linux image: /boot/vmlinuz-2.6.31-17-generic
Found initrd image: /boot/initrd.img-2.6.31-17-generic
Found linux image: /boot/vmlinuz-2.6.31-14-generic
Found initrd image: /boot/initrd.img-2.6.31-14-generic
Found Windows Vista (loader) on /dev/sda1
Found Windows 7 (loader) on /dev/sda2
Adding Windows 43_custom
/etc/grub.d/50_windows7: 4: menuentry: not found