I really want to use D but I'm constantly frustrated by issues just like this.
I get the same error message on 64 bit Ubunutu 10.10 as well. I do plan to stick with it and when D is within 5% of the speed of gcc for my type of application (computer chess) I'm switching. Sorry I cannot be of more help to you. I was hoping to at least find a binary distribution that is up to date but I have not been able to do so. I wonder if this will compile on a 32 bit box? I may try it with virtual-box when I get time and that would my only suggestion. GDC is in the repository for Ubuntu but it's an ancient version and I don't know if it produces 64 bit executables. It's my understanding that GDC runs as a 32 bit application but that later version do produce 64 bit binaries which is important to me since I rely on 64 bit data structures for high performance.