I\'ve install the Aptana3 Eclipse plugin, I am using eclipse Version: Juno Service Release 1 Build id: 20121004-1855.
Each time I launch eclipse I see an error dialog th
Find the Folder bundles in your installation.
<apptanaFolder>/configuration/org.eclipse.osgi/bundles
do a chmod to allow the user read and write to this folder:
chmod 775 <apptanaFolder>/configuration/org.eclipse.osgi/bundles -R
Be Happy, cause you solve your problem!
Here in German Language: http://wiki.xstable.de/doku.php/entwicklungsumgebung:eclipse:troubleshooting#ruble_manager
I tried the solution of Jonathan to no avail, although one of the adresses for Aptana was indeed unchecked and unmarked.
What worked for me was simply updating the plugins though Help --> Check for Updates.