Solution (if anybody interested): http://pachacoti.wordpress.com/2012/0... update idlde.ini like this (depends on what version of idl you are using x86 or x86_64): -vm C:\Program Files\Exelis\IDL82\bin\bin.x86_64\jre\bin -startup plugins/org.eclipse.equinox.launcher_1.2.0.v20110502.jar --launcher.library plugins/org.eclipse.equinox.launcher.win32.win32.x86_64_1.1.100.v20110502 -vmargs -Xms1024m -Xmx4096m -Dosgi.instance.area.default=@user.home/IDLWorkspace82 -Dosgi.configuration.area=@user.home/.idl/idlworkbench-config-idl8.2.3_x86_64 -Dosgi.configuration.cascaded=true -Dosgi.checkConfiguration=true -Dosgi.sharedConfiguration.area.readOnly=true -Dorg.eclipse.update.reconcile=false -Declipse.p2.data.area=@config.dir/p2 -Dosgi.sharedConfiguration.area=C:\Program Files\Exelis\IDL82\bin\bin.x86_64/configuration