Error Update KNIME 5.5

Good morning, I have the following error message, after update Knime Analitics Platform it does’nt start:

Error notifying a preference change listener. Check the log for details.

com.knime.explorer.sharedspace.AbstractSharedSpaceContentProvider: method ‘void (org.knime.workbench.explorer.view.AbstractContentProviderFactory, org.knime.core.workbench.mountpoint.api.WorkbenchMountPoint)’ not found

Thans for your help