A workspace can only be opened by one workbench instance at a time. If you browse the debugger's workspace with the Package Explorer view or Navigator view, you will see all the same pluglet projects that you have in your target workspace, but no other projects. The debugger workbench is for pluglet debugging only and does not necessarily have the plug-ins required to open other kinds of projects.
The debugger and target workbenches synchronize the pluglet projects. Any changes you make to pluglet resources in the debugger workbench will automatically be refreshed into the target workbench and vice-versa.
In addition, the Internal Tools menu on the global toolbar in the target and debugger workbenches contains the same pluglet launch history and favorites menu groups. These history and favorites groups are synchronized. As changes occur to them in one workbench, they are automatically changed in the other workbench.
Similarly, if you open the Internal Tools window from the debugger workbench by clicking Internal Tools launch configuration dialog through , you will see the same pluglet launch configurations that are present in your target workbench.
The debugger workbench is launched using a special configuration that includes only the feature plug-ins needed for pluglet debugging, such as the Pluglets, Java, Debug, Team, PDE, Platform, and Help features.
Your pluglet project references plug-ins in their pluglets.xml files that do not exist in the debugger workbench configuration. This is not an issue, because the target workbench automatically communicates information to the debugger workbench about plug-ins in the target configuration.
Similarly, the target workbench can have plug-ins that contribute to the plugletTemplate extension point, which controls what templates are displayed in the New Pluglet wizard, that are not present in the debugger workbench. These contributions are automatically communicated to the debugger workbench so that its New Pluglet wizard lists the same pluglet templates that the target workbench lists.
To learn more about Eclipse debugging, see the Getting Started, Basic tutorial, Debugging your programs topics in the "Java Development User Guide " topic, in online help.