MLR wrote:

> deloptes points in devel to $CLASSPATH, the var in empty in my shell.
> ./arduino is a bash script.
> 

Because it pissed me I downloaded the tool and ran the install script.
After this I typed ./arduino and the gui started.

Looking into the install script it might be that it creates links in your
current environment, so I sugggest 
        1. login in default ubuntu
        2. run uninstall.sh
        3. login in TDE
        4. run install.sh
        5. ./arduino
        6. it should work

regards