Is any one using Aptana Studio with Ubuntu 12.04?

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http://askubuntu.com – Is any one using Aptana studio as a stand alone in ubuntu 12.04? I have downloaded the file, and have the latest Oracle sun java installed. but when I double click the aptanastudio3 icon it tels me to search for a program to open it... any special way i need to go about things? (HowTos)