Hi Seamus,
I tried to follow your trick to remove the AppleDouble Files, but I got some errors in terminal.
Anyway, I was able to install HANA Studio and Client following these five steps:
1. Extract “sap_hana_linux64_studio_rev80.tgz” into the same directory;
2. Open the Terminal from directory “sap_hana_linux64_studio_rev80/sap_hana_linux64_studio_rev80”
3. Remove Apple Double files (files that start with '._' ) run this command:
find . -name '._*' -print0 | xargs -0 rm
4. Fix dependencies on “libjpeg62” run this command:
sudo apt-get install libjpeg62
5. Install Hana Setup run this command
sudo ./hdbsetup
Hope this helps,
Regards
Luca