EDIT

        try{

            if(selectedCsii != null) {

                if(selectedCsii.isLocalhost()) {

                    txtPort.setEditable(true);

                    txtPort.setEnabled(true);

                }

                if(selectedCsii.pingServer()) {

                    txtCdmServerStatus.setText(STATUS_AVAILABLE);

                    populateCdmInstanceCombo(true);

                    String serverVersionTimestamp = generateLastModifiedTooltip(selectedCsii.getCdmlibLastModified());

                    txtServerVersion.setText(selectedCsii.getCdmlibServicesVersion() + ":" + serverVersionTimestamp); //$NON-NLS-1$

                } else {

                    txtCdmServerStatus.setText(STATUS_NOT_AVAILABLE);

                    comboCdmInstance.removeAll();

                    disableCdmInstanceControls("", "");

                }

            updatePort();

        }

        catch(SWTException e){

            //catch widget is disposed exception which may occurr if

            //dialog is closed but the runnable tries to update