Issue: Import from Mediawiki - Fatal Error at Step 2

$this->register->db

$this->registry->db

Fatal Error: Field thumbnail_dateline is not defined in $validfields in class vB_DataManager_Attachment in [path]/includes/class_dm.php (Zeile 515)
#0 vb_error_handler(256, Field thumbnail_dateline is not defined in $validfields in class vB_DataManager_Attachment, /../../../../forum/includes/class_dm.php, 515, Array ([this] => vB_DataManager_Attachment Object ([validfields] => Array ([attachmentid] => Array ([0] => 3,[1] => 3),[filedataid] => Array ([0] => 3,[1] => 1),[userid] => Array ([0] => 3,[1] => 1),[filename] => Array ([0] => 7,[1] => 1,[2] => _-_mEtHoD_-_,[3] => verify_filename),[dateline] => Array ([0] => 6,[1] => 2),[state] => Array ([0] => 7,[1] => 0),[counter] => Array ([0] => 3,[1] => 0),[posthash] => Array ([0] => 7,[1] => 0,[2] => _-_mEtHoD_-_,[3] => verify_md5_alt),[contenttypeid] => Array ([0] => 3,[1] => 1),[contentid] => Array ([0] => 3,[1] => 0),[caption] => Array ([0] => 13,[1] => 0),[reportthreadid] => Array ([0] => 3,[1] => 0),[fbbypass] => Array ([0] => 2,[1] => 0)),[table] => attachment,[condition_construct] => Array ([0] => attachmentid = %1$d,[1] => attachmentid),[bitfields] => Array (),[lists] => Array (),[storage] => fs,[setfields] => Array ([dateline] => 1),[rawfields] => Array (),[registry] => vB_Registry Object ([datastore] => vB_Datastore Object ([defaultitems] => Array ([0] => options,[1] => bitfields,[2] => attachmentcache,[3] => forumcache,[4] => usergroupcache,[5] => stylecache,[6] => languagecache,[7] => products,[8] => pluginlist,[9] => cron,[10] => profilefield,[11] => loadcache,[12] => noticecache),[registry] => vB_Registry Object ( *RECURSION*,[dbobject] => vB_Database Object ([functions] => Array ([connect] => mysql_connect,[pconnect] => mysql_pconnect,[select_db] => mysql_select_db,[query] => mysql_query,[query_unbuffered] => mysql_unbuffered_query,[fetch_row] => mysql_fetch_row,[fetch_array] => mysql_fetch_array,[fetch_field] => mysql_fetch_field,[free_result] => mysql_free_result,[data_seek] => mysql_data_seek,[error] => mysql_error,[errno] => mysql_errno,[affected_rows] => mysql_affected_rows,[num_rows] => mysql_num_rows,[num_fields] => mysql_num_fields,[field_name] => mysql_field_name,[insert_id] => mysql_insert_id,[escape_string] => mysql_escape_string,[real_escape_string] => mysql_real_escape_string,[close] => mysql_close,[client_encoding] => mysql_client_encoding),[registry] => vB_Registry Object ( *RECURSION*,[fetchtypes] => Array ([2] => 2,[1] => 1,[0] => 3),[appname] => vBulletin,[appshortname] => vBulletin,[database] => db279308364,[connection_master] => Resource id #6,[connection_slave] => Resource id #6,[connection_recent] => Resource id #6,[multiserver] => ,[shutdownqueries] => Array ([lastvisit] => UPDATE vb3_user SET lastactivity = 1265225413 WHERE userid = 1 ,[0] => INSERT INTO vb3_adminlog(userid, dateline, script, action, extrainfo, ipaddress) VALUES (1, 1265225413, 'vaultwiki_setup.php', 'import', '', '109.192.66.169') ),[sql] => ,[reporterror] => 1,[error] => ,[errno] => 0,[maxpacket] => 0,[locked] => ,[querycount] => 750,[rows] => 0),[prefix] => ,[checked_options] => 1),[input] => vB_Input_Cleaner Object ([shortvars] => Array ([f] => forumid,[t] => threadid,[p] => postid,[u] => userid,[a] => announcementid,[c] => calendarid,[e] => eventid,[q] => query,[pp] => perpage,[page] => pagenumber,[sort] => sortfield,[order] => sortorder),[superglobal_lookup] => Array ([g] => _GET,[p] => _POST,[r] => _REQUEST,[c] => _COOKIE,[s] => _SERVER,[e] => _ENV,[f] => _FILES),[scriptpath] => ,[reloadurl] => ,[wolpath] => ,[url] => ,[ipaddress] => ,[alt_ip] => ,[registry] => vB_Registry Object ( *RECURSION*,[cleaned_vars] => Array ([vbulletin_collapse] => 7,[bb_referrerid] => 3,[bb_userid] => 3,[bb_password] => 7,[bb_lastvisit] => 3,[bb_lastactivity] => 3,[bb_threadedmode] => 9,[bb_sessionhash] => 9,[bb_userstyleid] => 3,[bb_languageid] => 3,[s] => 9,[styleid] => 2,[langid] => 2,[adminhash] => 7,[ajax] => 1,[bb_cpsession] => 7,[package] => 7,[startat] => 3,[step] => 3,[mw_prefix] => 7,[imgpath] => 7,[imgdir] => 7)),[db] => vB_Database Object ([functions] => Array ([connect] => mysql_connect,[pconnect] => mysql_pconnect,[select_db] => mysql_select_db,[query] => mysql_query,[query_unbuffered] => mysql_unbuffered_query,[fetch_row] => mysql_fetch_row,[fetch_array] => mysql_fetch_array,[fetch_field] => mysql_fetch_field,[free_result] => mysql_free_result,[data_seek] => mysql_data_seek,[error] => mysql_error,[errno] => mysql_errno,[affected_rows] => mysql_affected_rows,[num_rows] => mysql_num_rows,[num_fields] => mysql_num_fields,[field_name] => mysql_field_name,[insert_id] => mysql_insert_id,[escape_string] => mysql_escape_string,[real_escape_string] => mysql_real_escape_string,[close] => mysql_close,[client_encoding] => mysql_client_encoding),[registry] => vB_Registry Object ( *RECURSION*,[fetchtypes] => Array ([2] => 2,[1] => 1,[0] => 3),[appname] => vBulletin,[appshortname] => vBulletin,[database] => db279308364,[connection_master] => Resource id #6,[connection_slave] => Resource id #6,[connection_recent] => Resource id #6,[multiserver] => ,[shutdownqueries] => Array ([lastvisit] => UPDATE vb3_user SET lastactivity = 1265225413 WHERE userid = 1 ,[0] => INSERT INTO vb3_adminlog(userid, dateline, script, action, extrainfo, ipaddress) VALUES (1, 1265225413, 'vaultwiki_setup.php', 'import', '', '109.192.66.169') ),[sql] => ,[reporterror] => 1,[error] => ,[errno] => 0,[maxpacket] => 0,[locked] => ,[querycount] => 750,[rows] => 0),[userinfo] => Array ([userid] => 1,[adminpermissions] => 524284,[navprefs] => vbulletin_17,[cssprefs] => vBulletin_3_Manual,[notes] => vbwikiskin heißt der standardskin bei vBWiki Pro ISO-8859-1 ist der alte Schriftsatz / beim Update darauf achten die neuen UTF-8 Files einzuspielen | RISKANT ! JG + DL importiert 21,20,19,18 (Seiten, je 5 Artikel),[dismissednews] => 5,11,12,33,34,38,40,43,45,47,50,52,53,59,60,62,65,66,69,71,73,75,76,77,78,79,80,81,82,84,85,86,88,90,91,[languageid] => 0,[ptpermissions] => 3,[blogpermissions] => 3,[ms_custom_admin_perms] => 1,[vbcmspermissions] => 3,[temp] => ,[field1] => ,[field2] => ,[field3] => ,[field4] => ,[field5] => ,[field6] => ,[field7] => ,[field8] => ,[field9] => ,[subfolders] => ,[pmfolders] => ,[buddylist] => 2 11 21,[ignorelist] => ,[signature] => ,[searchprefs] => a:1:{s:20:"cmsadmin_showperpage";i:50;},[rank] => ,[excludeforumsgnp] => ,[vbsoccerprefs] => ,[vbsoccerunbet] => ,[vbsoccernotify] => 0,[usergroupid] => 6,[membergroupids] => ,[displaygroupid] => 6,[username] => admin,[password] => 98ccd9ba2f6ed542b1ad55dfd801107d,[passworddate] => 1262818800,[email] => admin@wollmilchsau.org,[styleid] => 0,[parentemail] => ,[homepage] => ,[icq] => ,[aim] => ,[yahoo] => ,[msn] => ,[skype] => ,[showvbcode] => 2,[showbirthday] => 2,[usertitle] => Administrator,[customtitle] => 1,[joindate] => 1197458734,[daysprune] => 0,[lastvisit] => 1265225350,[lastactivity] => 1265225412,[lastpost] => 1263473473,[lastpostid] => 0,[posts] => 37,[reputation] => 11,[reputationlevelid] => 5,[timezoneoffset] => 0,[pmpopup] => 0,[avatarid] => 0,[avatarrevision] => 0,[profilepicrevision] => 0,[sigpicrevision] => 0,[options] => 45243351,[birthday] => ,[birthday_search] => 0000-00-00,[maxposts] => -1,[startofweek] => 1,[ipaddress] => ,[referrerid] => 0,[emailstamp] => 0,[threadedmode] => 0,[autosubscribe] => -1,[pmtotal] => 22,[pmunread] => 0,[salt] => 6vv,[ipoints] => 0,[infractions] => 0,[warnings] => 0,[infractiongroupids] => ,[infractiongroupid] => 0,[adminoptions] => 0,[profilevisits] => 956,[friendcount] => 3,[friendreqcount] => 0,[vmunreadcount] => 0,[vmmoderatedcount] => 0,[socgroupinvitecount] => 0,[socgroupreqcount] => 0,[arcade_ban] => 0,[times_played] => 0,[is_arcade_mod] => 0,[fav_games] => ,[user_sort] => 0,[user_order] => 0,[user_g_pp] => 0,[user_s_pp] => 0,[def_g_cat] => 0,[game_skin] => 0,[arcade_mod_privs] => ,[arcade_pmactive] => 1,[games_played] => 13,[time_played] => 1654,[arcade_points] => 500,[arcade_spent] => 0,[arcade_won] => 0,[arcade_high] => 0,[create_tourney] => 1,[arcade_sess_gid] => 563,[arcade_sess_start] => 1262878017,[arcade_gtype] => 0,[arcade_session] => 38069,[vbjournal_stories] => 2,[pcunreadcount] => 0,[pcmoderatedcount] => 0,[photoplog_filecount] => 11524,[photoplog_commentcount] => 1,[gb_profile_video] => ,[gmmoderatedcount] => 0,[xperience_levelp] => 28,[xperience] => 38862,[xperience_done] => 1,[xperience_level] => 28,[xperience_next_level] => 40,[xperience_next_level_points] => 1688,[xperience_ppd] => 0,[xperience_awards] => ,[post_thanks_user_amount] => 1,[post_thanks_thanked_posts] => 1,[post_thanks_thanked_times] => 1,[showcybstats] => 1,[credits_ibp_pass] => 1213046300,[credits_ibp_access] => 0,[ncode_imageresizer_mode] => ,[ncode_imageresizer_maxwidth] => ,[ncode_imageresizer_maxheight] => ,[xperience_shopitems] => ,[xperience_lastupdate] => 1262867160,[invitation] => 100,[caninvitation] => 1,[receivebulletin] => 0,[receivebulletin_type] => 0,[bloggroupreqcount] => 0,[showblogcss] => 1,[importuserid] => 0,[dl2_uploads] => 0,[dl2_downloads] => 0,[dl2_comments] => 0,[crosslink] => 1,[popup] => 1,[inactivitytag] => 0,[userpma] => 3,[twitter_username] => ,[twitter_password] => ,[twitter_size] => ,[assetposthash] => ,[fbuid] => 0,[fbssk] => ,[fboptions] => ,[fbemail] => 0,[vault_edits] => 0,[saved_languageid] => 0,[lang_options] => 1,[lang_code] => de,[lang_charset] => ISO-8859-1,[lang_locale] => ,[lang_imagesoverride] => ,[lang_dateoverride] => ,[lang_timeoverride] => ,[lang_registereddateoverride] => ,[lang_calformat1override] => ,[lang_calformat2override] => ,[lang_logdateoverride] => ,[lang_decimalsep] => ,,[lang_thousandsep] => .,[showsignatures] => 1,[showavatars] => 1,[showimages] => 1,[coppauser] => 0,[adminemail] => 1,[showvcard] => 0,[dstauto] => 1,[dstonoff] => 1,[showemail] => 1,[invisible] => 1,[showreputation] => 0,[receivepm] => 1,[emailonpm] => 1,[hasaccessmask] => 0,[vbasset_enable] => 1,[postorder] => 0,[receivepmbuddies] => 1,[noactivationmails] => 0,[pmboxwarning] => 0,[showusercss] => 1,[receivefriendemailrequest] => 1,[vm_enable] => 1,[vm_contactonly] => 0,[pmdefaultsavecopy] => 1,[adminavatar] => 0,[adminprofilepic] => 0,[urlusername] => admin,[musername] => admin,[displaygrouptitle] => Administratoren,[displayusertitle] => Administrator,[realstyleid] => 0,[securitytoken_raw] => 31902d3afd82375f9b2e90b6df8b58c5cf9877e1,[securitytoken] => 1265225413-20eed42c5dbafd8ed196308fbe631fdb4f8b8c4c,[logouthash] => 1265225413-20eed42c5dbafd8ed196308fbe631fdb4f8b8c4c,[permissions] => Array ([usergroupid] => 6,[title] => Administratoren,[description] => ,[usertitle] => Administrator,[passwordexpires] => 180,[passwordhistory] => 360,[pmquota] => 500,[pmsendmax] => 0,[opentag] => ,[closetag] => ,[canoverride] => 0,[ispublicgroup] => 0,[forumpermissions] => 1090519039,[pmpermissions] => 7,[calendarpermissions] => 63,[wolpermissions] => 31,[adminpermissions] => 3,[genericpermissions] => 2147483583,[genericoptions] => 55,[signaturepermissions] => 237567,[attachlimit] => 0,[avatarmaxwidth] => 169,[avatarmaxheight] => 169,[avatarmaxsize] => 20000,[profilepicmaxwidth] => 150,[profilepicmaxheight] => 150,[profilepicmaxsize] => 65535,[sigpicmaxwidth] => 500,[sigpicmaxheight] => 100,[sigpicmaxsize] => 999999,[sigmaximages] => 0,[sigmaxsizebbcode] => 7,[sigmaxchars] => 0,[sigmaxrawchars] => 0,[sigmaxlines] => 0,[vbnews] => 32767,[ptpermissions] => 63,[vbblog_general_permissions] => 524286,[vbblog_entry_permissions] => 32767,[vbblog_comment_permissions] => 990,[visitormessagepermissions] => 63,[socialgrouppermissions] => 262143,[usercsspermissions] => 63,[albumpermissions] => 255,[albumpicmaxwidth] => 600,[albumpicmaxheight] => 600,[albummaxpics] => 100,[albummaxsize] => 0,[genericpermissions2] => 1,[arcade_access] => 2,