I loved the Spider Queen campaign aswell, and I loved the Return of the Dragon too... Shame it's buggy (worse yet, not because of the author's mistakes...)
Well, I stopped at map 8 and I can't go on. When I try to go to submap it does the normal submap error, that's ok, since it's a optional quest. Also, I can't beat the undead without the blade, so I just used a little of over making undead from that book you get with your dragon. And I beat the undead.
The problem is: I watch the ending cutscene but when I enter the portal I'm pulled back so the campaign main screen... Worse yet, without the map 9 open.
I tried opening the campaign to "unfold" the maps from campaign that were togeter, but it seems my warcraft is bugged or something, since I talked to a guy and he says there is no kind of protection on the map... When I open the campaign my world editor crashes... The guy told me to re-install Warcraft, but I no longer own the CD to install Warcraft and I got too many saves and stuff to start again. The guy couldn't "unfold" the maps for me when I asked him to send to my e-mail, so I'd like to ask you people: If you have some time or "unfolded" to play yourself the last maps, please, send me a message and I'll pass on my e-mail. It wouldn't hurt to just send me the maps, would it?
Thank you people, I just want to finish this campaign because it is too awesome to leave without an end

Note: I tried Motherland [race] [level] cheat, but since nerubians aren't an official Warcraft race, it didn't work.
Thanks if you read it all and thank you very much if you have any tip for me.
Also, I'd really like to play the campaign and finish it