Program: 118998
Project: 118998
Buggy source:
private void updateFinishButtonStatus(){
  List<ILoginConnectionService> loginConnectionServices=LoginConnectionManager.getRemoteConnectionService();
  boolean localConn=false;
  String errorMsg=null;
  if (getConnection() != null) {
    localConn=getConnection().getRepositoryId() == null || getConnection().getRepositoryId().equals(RepositoryConstants.REPOSITORY_LOCAL_ID);
    if (loginConnectionServices.size() > 0 && getConnection().isComplete()) {
      for (      ILoginConnectionService loginConncetion : loginConnectionServices) {
        errorMsg=loginConncetion.checkConnectionValidation(getConnection().getName(),getConnection().getDescription(),getConnection().getUser(),getConnection().getPassword(),getConnection().getWorkSpace(),getConnection().getDynamicFields().get(RepositoryConstants.REPOSITORY_URL));
        if (StringUtils.isEmpty(errorMsg)) {
          break;
        }
      }
    }
  }
  if (getConnection() == null) {
    refreshProjectOperationAreaEnable(false);
    finishButton.setEnabled(false);
  }
 else   if (errorMsg != null) {
    refreshProjectOperationAreaEnable(false);
    finishButton.setEnabled(false);
    errorManager.setErrMessage(errorMsg);
  }
 else   if (getConnection() != null && projectViewer != null && projectViewer.getInput() == null) {
    refreshProjectOperationAreaEnable(false);
    finishButton.setEnabled(false);
    errorManager.setErrMessage(Messages.getString("String_Node_Str"));
  }
 else   if (!isWorkSpaceSame()) {
    refreshProjectOperationAreaEnable(false);
    finishButton.setEnabled(true);
    changeFinishButtonAction(FINISH_ACTION_RESTART);
  }
 else {
    refreshProjectOperationAreaEnable(true);
    changeFinishButtonAction();
    refreshUIFinishButtonEnable();
    finishButton.getShell().setDefaultButton(finishButton);
  }
}

Fixed version (ground truth):
private void updateFinishButtonStatus(){
  List<ILoginConnectionService> loginConnectionServices=LoginConnectionManager.getRemoteConnectionService();
  boolean localConn=false;
  String errorMsg=null;
  if (getConnection() != null) {
    localConn=getConnection().getRepositoryId() == null || getConnection().getRepositoryId().equals(RepositoryConstants.REPOSITORY_LOCAL_ID);
    if (loginConnectionServices.size() > 0 && getConnection().isComplete()) {
      for (      ILoginConnectionService loginConncetion : loginConnectionServices) {
        errorMsg=loginConncetion.checkConnectionValidation(getConnection().getName(),getConnection().getDescription(),getConnection().getUser(),getConnection().getPassword(),getConnection().getWorkSpace(),getConnection().getDynamicFields().get(RepositoryConstants.REPOSITORY_URL));
        if (StringUtils.isEmpty(errorMsg)) {
          break;
        }
      }
    }
  }
  if (getConnection() == null) {
    refreshProjectOperationAreaEnable(false);
    finishButton.setEnabled(false);
  }
 else   if (errorMsg != null) {
    refreshProjectOperationAreaEnable(false);
    finishButton.setEnabled(false);
    errorManager.setErrMessage(errorMsg);
  }
 else   if (getConnection() != null && projectViewer != null && projectViewer.getInput() == null) {
    refreshProjectOperationAreaEnable(false);
    finishButton.setEnabled(false);
    errorManager.setErrMessage(Messages.getString("String_Node_Str"));
  }
 else   if (!isWorkSpaceSame()) {
    refreshProjectOperationAreaEnable(false);
    changeFinishButtonAction(FINISH_ACTION_RESTART);
  }
 else {
    refreshProjectOperationAreaEnable(true);
    changeFinishButtonAction();
    finishButton.getShell().setDefaultButton(finishButton);
  }
}