[pde-build-dev] What meens "Bundle ... version ... has already been inst

[Peter Rader <p.rader@xxxxxxxxxxxx>]

Hello PD's,

i had written a plugin that activates
itself on ide-startup.

Bevore Yesterday the eclipselink plug-in
works well.
Since yesterday the plugin can't be
installed/activated into eclipse IDE.
Yesterday i had installed a new version
of Amateras-plugin into 
Eclipse IDE, i removed the old version
of the Amateras-plugin by deletion from the plugin-directory.
The Amateras-plugin an the eclipselink-plugin
has no dependecies together.


The error-log-view shows 2 Errors::
1. Could not install bundle plugins/org.denkweise.eclipselink_1.0.0/
  Bundle "org.denkweise.eclipselink" version "1.0.0"
has already been installed from: update@plugins/org.denkweise.eclipselink_1.0.0.jar
2. startup class must implement org.eclipse.ui.IStartup

The message comes from = org.eclipse.update.configurator
Stacktrace = no stacktrace is available.

Sessoin-Data:
eclipse.buildId=I20060602-1317
java.version=1.4.2_12
java.vendor=Sun Microsystems Inc.
BootLoader constants: OS=win32, ARCH=x86,
WS=win32, NL=de_DE
Command-line arguments:  -os win32
-ws win32 -arch x86

So: whats wrong?