private bool CheckFixupIsoInXencenterInstallation(out string error) { error = string.Empty; var theVdi = Connection.Cache.VDIs.FirstOrDefault(vdi => vdi != null && vdi.name_label == OVF.GetISOFixupFileName()); if (theVdi != null || File.Exists(OVF.GetISOFixupPath())) { return(true); } error = Messages.IMPORT_OPTIONS_PAGE_ERROR_NO_FIXUP_ISO_INSTALLED; return(false); }