Bug 148551 [Import/Export] Import File System Problem
When going to import some files if you choose General, then Filesystem. As you browse to the folder where you want to import items from and select it, the option to "Select All" is not available until you either select the folder or a file in the folder.
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/internal/wizards/datatransfer/WizardFileSystemResourceImportPage1.java
super.setAllSelections(value);
    }
    /**
     * Sets the source name of the import to be the supplied path.
     * Adds the name of the path to the list of items in the
     * source combo and selects it.
     *
     * @param path the path to be added
     */
    protected void setSourceName(String path) {
        if (path.length() > 0) {
            String[] currentItems = this.sourceNameField.getItems();
            int selectionIndex = -1;
            for (int i = 0; i < currentItems.length; i++) {
                if (currentItems[i].equals(path)) {
					selectionIndex = i;
				}
            }
            if (selectionIndex < 0) {
                int oldLength = currentItems.length;
                String[] newItems = new String[oldLength + 1];
                System.arraycopy(currentItems, 0, newItems, 0, oldLength);
                newItems[oldLength] = path;
                this.sourceNameField.setItems(newItems);
                selectionIndex = oldLength;
            }
            this.sourceNameField.select(selectionIndex);
            resetSelection();
        }
    }