[news.eclipse.platform.swt] external libraries in Runtime-Workbench

["Michael Remme" <remi128@xxxxxx>]

I have problems to run a plugin, which is using some other projects and
libraries by using the Runtime-Workbench.
Like normal, by using Properties->JavaBuildPath->Projects i added some other
projects into the plugin-project. By using the Libraries-Tab i added some
foreign libraries, which are used. When i am running the plugin by Run as
Runtime-Workbench i am getting the NoClassDefFoundError.
Additianal, when i am editing the plugin.xml all the adjustments i did
before are skipped out of the project.
Any ideas what i am doing wrong here?

Thanks in advance,
Michael