Felenasoft

I tried to install 10.04 64 bit onto an HP 7400 laptop and could not get the software to install. It did install though on a HP 9000t laptop running 10.10. What's the matter here?

The problem might have been that to run 32-bit applications on some of 64-bit Ubuntu versions you need to install ia32-libs. Command line is as follows:
sudo apt-get install ia32-libs
Alternatively, you can upgrade your 10.04 to 10.10 to see whether Xeoma will be installed successfully then.