Donload the adobe air installer:
wget http://drive.noobslab.com/data/apps/AdobeAir/adobe-air.sh
Make the installer executable:
chmod +x adobe-air.sh
Run the installer as root:
sudo ./adobe-air.sh
Download scratch2 air file. It's important you use this version:
wget https://scratch.mit.edu/scratchr2/static/sa/Scratch-444.air
Now naviate to where you downloaded "Scratch-444.air" and double click or air application installer.
It will take a little while. It will probably ask for a root password during install.
Seems new version of scratch has a broken .air file! Once you do get it installed dont update.