I simply tried to create a custom component, by right-clicking on COMPONENT_PROJECT>New>New Component. I then named the new component, 'tMyComponent,' and accepted the rest of the defaults. When I double clicked on the 'tMyComponent_begin.javajet' I then received the message that, 'Plug-in org.talend.componentdesigner was unable to load class org.eclipse.jet.internal.editor.JETTextEditor.'
I have confirmed that I can create and execute jobs using other components.
Below is the .log file from the workspace/.metadata.
!SESSION 2015-08-05 13:16:19.421 -----------------------------------------------
eclipse.buildId=unknown
java.version=1.7.0_79
java.vendor=Oracle Corporation
BootLoader constants: OS=win32, ARCH=x86_64, WS=win32, NL=en_US
Command-line arguments: -os win32 -ws win32 -arch x86_64
!ENTRY org.eclipse.jdt.launching.macosx 4 0 2015-08-05 13:16:20.647 !MESSAGE FrameworkEvent ERROR
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