Problem with /ip route remove command

As you can see from the script i posted a while back: http://forum.mikrotik.com/t/checking-and-disabling-gateways/35512/1
The last command of the script is /ip route remove [find dst-address=“$pingip/32”]
After some testing I discovered the following: Although the route is removed, the script seems to hang. I can see it is still active from the script/jobs. If i remove the command, the script closes as soon as it finishes. The same thing happens when i delete a route from the terminal
[admin@MikroTik] /ip route> remove *1
action timed out - try again, if error continues contact MikroTik support and se
nd a supout file (13)
I also tried on a clean rb450 (no configuration at all, only one route)
I am using 4.4, will try with latest
edit:
What’s new in 4.5:
*) fixed static route removing;

in 4.6 you should not have this problem