Bug 107097 Error dialogs pop up when browsing for a JAR.
Build: 3.2M1 On a workspace containing two Java projects: one open and one closed: 1. Bring up the Java build path property page for the open project. 2. on the Libraries tab, press 'Add JARs...' You will get two error dialogs (per closed project) complaining about the project being not open.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/wizards/buildpaths/ArchiveFileFilter.java
public static final String[] FILTER_EXTENSIONS= new String[] {"*.jar;*.zip"}; 
	private static final String[] fgArchiveExtensions= { "jar", "zip" }; 
	private List fExcludes;
	private boolean fRecursive;
	
	/**
	 * @param excludedFiles Excluded files will not pass the filter.
	 * <code>null</code> is allowed if no files should be excluded. 
	 * @param recusive Folders are only shown if, searched recursively, contain
	 * an archive
	 */
	public ArchiveFileFilter(IFile[] excludedFiles, boolean recusive) {
		if (excludedFiles != null) {
			fExcludes= Arrays.asList(excludedFiles);