I'm actually having this same problem, but a little confused as to what the workaround is here...
If Norstar Manager 3.7 is what comes with NRU 9.0, why would Norstar Manager 3.5 come with NRU 9.1?? Is there somewhere I can get a copy of Norstar Managewr 3.5 so that I can backup an 8x24 (getting the same error message stated here) as far as an upgrade download from Nortel or something?
I've got a customer who's cartridge is shot, but yet refuses to buy another one- so when they lose power, about 40 DID's have to be reconfigured in addition to all those pesky matching ext #'s...this would be a great help!
TIA!