- Fix: Prevent authentication bypass for the admin port when a new game is started [FS#4771] (r22934)
- Fix: TTO savegames with any aircraft not in an hangar caused crashes during load (r22915)
- Fix: Windows 2000 and XP without service pack 3 must use the win9x binary/installer; the newer MSVC compiler of the compile farm does not support those versions of Windows anymore [FS#4749] (r22909)
- Fix: [NewGRF] Variables 40 and 81 of callback 18 are not the same as 80 (r22867)
- Fix: [NewGRF] Generic callbacks shall chain to the next GRF when the callback fails (r22866, r22865)
- Fix: Perform stricter checks on some commands [CVE-2011-3341] [FS#4745] (r22845)
- Fix: Harden savegame load against too many AI config settings [CVE-2011-3342] [FS#4748] (r22843)
- Fix: Compilation with GCC 4.7 (r22832, r22728, r22719)
- Fix: Allow to demolish aqueducts built in the scenario editor [FS#4741] (r22821)
- Fix: Towns expanding from the "wrong" side of a tunnel or bridge [FS#4731] (r22810, r22809)
- Fix: [NewGRF] String codes for dates should use unsigned words, like old OpenTTD did before it learned dates before 1920 (r22774)
- Fix: [NoAI] Clarify the meaning of AIStation::IsWithinTownInfluence(), AITile::IsWithinTownInfluence() and AITown::IsWithinTownInfluence() [FS#4702] (r22763)
- Fix: [NewGRF] Also free allocated depot tables of NewGRF airports (r22760)
- Fix: [NewGRF] Invalid memory access when querying the grfID of the default objects [FS#4730] (r22757)
- Fix: When marking tile selections dirty, use the height information of the corners instead of the surface slope. This is more accurate when the foundation is kind of undefined [FS#4727] (r22755)
- Fix: Make aircraft point to the exit when leaving the hangar [FS#4696] (r22743, r22742, r22741)
- Fix: Display the size of the leveled platform in the measurement tooltip of terraforming operations [FS#4708] (r22740, r22739)
- Fix: Setting company passwords via the GUI on servers (including starting a company with the default password) failed, so no client could join that company [FS#4722] (r22738)
- Fix: [NewGRF] The construction stage sprites were incorrectly selected in cases other than 1 or 4 sprites per set (r22731)
- Fix: [NoAI] AITile::GetCargoAcceptance, AITile::GetCargoProduction and AIRail::BuildNewGRFRailStation did not check the cargo argument for validity (r22726)
- Fix: [NewGRF] Always draw NewGRF supplied texts with a default colour (r22725)
- Fix: [NewGRF] Do not restrict AdvVarAct2 to 255 operations (r22723)
- Fix: If there is no point in opening the rail/air toolbar, do not open it for people who use hotkeys either rather than only for those using GUI elements (r22716, r22715, r22714)
- Fix: [NoAI] Allow AIAirport::GetNoiseLevelIncrease() also for expired airports [FS#4704] (r22710)