Aptana : java was started by returned exit code=13
windows 8.1 64 Bit , Aptana 3.4.2 , Java 64 Bit Error: Java : Must you have 32-bit version of java, or may be you have both version [32-bit 64-bit] of java on same computer. Make sure you have 32-bit version then must you specify the version that using in Aptana studio to do this : 1-Go to apatana folder and find the AptanaStudio3.ini file "C:\Users\[YourUser]\AppData\Roaming\Appcelerator\Aptana Studio" 2- Add the java 32-bit version path to AptanaStudio3.ini using notepad Package arch is 32-bit only for Windows OS. The 32-bit version of the JDK is required regardless of whether it is running