Problem VLAN

Hi, guys,

i have a problem, iam working with Router750GL, and add vlan interface in tagg mode.
working smooth… but when reboot the Router, conexion lost with vlan, and i need uncheck use sevice tag in the box option.apply change, and again mark Use service Tag, and the conexion back !

gives me the impression is when reboot Router, the vlan dont UP,
this is a problem recurrent? or only in my 750GL,?

There is some scripts to fix this problem
mikrotik vlan7.jpg

What RouterOs u use?