After installing Adobe’s AIR SDK, I was not able to get adl to run on a 64-bit Ubuntu 9.10. It reported an error that it was unable to load libqtcurve because the library was a 64-bit version (ELF 64). All that was needed to get it to run was to install the 32-bit version, like so:
sudo getlibs -l libqtcurve
Then, all was well.