- Fix: Invalid v->u.air.targetairport could cause crashes at several places [FS#2300] (r14343, 14344)
- Fix: Signs from old savegames were lost (causing little memory leaks) (r14340)
- Fix: When a company was renamed and then manager was renamed before building anything, company name changed (r14328)
- Fix: When you rename a town before building something and build something near that town your company would be called "<old townname> Transport" [FS#2251] (r14327)
- Fix: Free any blocks that a helicopter may have on an oilrig when the helicopter gets forcefully removed (bankruptcy). For other airports this isn't needed as they can't be used by multiple companies [FS#2241] (r14324)
- Fix: Possible assert when renaming removed waypoint (r14322)
- Fix: Properly delete orders so the pool doesn't fill up (r14319)
- Fix: Do not allow building road over level crossings and drive-through road stops in the wrong direction; do not allow adding roadtypes to non-drive through road stops; pay for all added road bits [FS#2268] (r14316, r14315, r14314, r14308)
- Fix: NewGRF rail continuation would always mark a tunnel on the same axis as connected, even when the tunnel faces the wrong direction (r13734)
- Fix: Assumption that non-north tiles of a house do not have the 1x1 building bit set was flawed with some NewGRFs. This caused the amount of houses to differ, which causes the town radii to differ, which causes desyncs when towns are expanded (r13729)
- Fix: Possible desync on the autorenew settings 20+ game years (i.e. 4.5+ hours) after a company was started (r13718)
- Fix: Any player could construct new companies [FS#2144] (r13716)
- Fix: Possible crash on creating a network packet (r13713)
- Fix: Enforce the length restrictions of company and president name in the commands too (r13712)
- Fix: In the case that elrails and 'realistic' acceleration are disabled all electrified engines would have no power on load, until the vehicle got turned around, loaded or got into a depot [FS#2102] (r13681)
- Fix: Saving TTD imported games in recession failed due to wrong (and unneeded) type conversions in the saveload code [FS#2131] (r13679)
- Fix: Inactive companies from old (TTD) saves could be marked active in some cases, which then loads garbage in their statistics and such [FS#2126] (r13676)
- Fix: Desync when building electrified trains on a dedicated server that was started with electrification disabled [FS#2122] (r13673)
- Fix: Clear the memory for the new AI during the loading of a savegame so it does not try to execute commands generated in a different savegame, which could be resulting in the AI trying to give orders to stations that do not exist (r13505)
- Fix: Loading of very old OpenTTD savegames was broken (r13373)
- Fix: Vehicle groups, engine replacement rules and player/company names were not properly reset/freed after bankrupt (r12906)
[0.6] -Prepare: for 0.6.1-RC1.
- Fix: Ensure that prop 25 is set for all vehicles in the consist before other properties as it could cause desyncs (r12856)
- Fix: Possible out of bounds array access (r12809)
- Fix: Enforce autorenew values range in command (r12808)
- Fix: Possible NULL pointer dereference when reading some NewGRF data [FS#1913] (r12637)
- Fix: Binding to a specific IP could cause OpenTTD to not register properly with the masterserver if one has multiple external interfaces (r12574)
