Is there a maximum number of dhcp scopes per win2k3 standard dhcp server?

We presently have 87 scopes defined on our one dhcp server. We can create
another in the dhcp console and activate it just fine. After exiting and
attempting to re-connect, the dhcp console cannot connect back to the dhcp
server (Cannot find dhcp server . . . ). Dhcp continues to run normally in
the background. Dhcploc receives requests & receives ip addresses normally.

Any of you dhcp experts ever see this?

Thanks
bob