If you can't solve your issue with these guidelines, then please include in your bugreport the map and gamemode (SP,Hotseat,LAN) you were playing. Before reporting sync issues in LAN, please read the article about preventing multiplayer issues first.
GAME DOESN'T LOAD or AI 'ponders'
If the game doesn't load or claims a .dll file is missing or says 'empty pointer to creature...' then the game wasn't patched to 3.1 before installation and/or mod isn't installed in right directory, uninstall and reinstall the mod.
How to Uninstall MMH5.5? (100% removal)
Use the uninstaller located in the start menu, if the shortcut cannot be found it is in the game folder.
GAME LOADS BUT MOD FEATURES ARE NOT WORKING
This is mostly discovered by encountering one of the following issues:
Various Custom Game options are grayed out.
Hero is only receiving defense skill with every levelup.
New heroes are not receiving the Town Management ability.
Witch huts are not asking questions.
The player doesn't receive creatures or resources from new artifacts, skills or specializations.
There are multiple possible causes:
-Game wasn't patched to 3.1 before installation and/or mod isn't installed in right directory, uninstall and reinstall the mod.
-You are loading the game from the wrong exe file. (watch out for old shortcuts and steam application misleading you)
-You are playing on a newly generated map in Hotseat or LAN, but forgot to activate scripts. Patch the map with reanimation patcher or mapmixer in start menu
-You are playing a map downloaded from the internet in Hotseat or LAN, but it doesn't have scripts activated. Patch the map with reanimation patcher or mapmixer in start menu.
-A conflicting mod or map is installed, try removing temporarily all custom maps and other mods downloaded from the internet and restart a clean RMG map, check if everything is now working properly.
-You are trying to play an incompatible custom map downloaded from the internet that includes conflicting game modifications or scripts or adds unrecognized new heroes.
To fully resolve the issues you often will have to restart your map.
Crashes can also be caused by issues listed under 'mutliple possible causes' above, here are some more likely causes:
This is a memory issue from original game, 64bit exe fixes this (if you can use it).
...when entering or besieging towns? ...or randomly?
Also an issue with the original H5 software on windows 10. Disable DEP, Windows Data Execution prevention
...when visiting tavern
Can be caused by issues listed under GAME LOADS BUT MOD FEATURES ARE NOT WORKING, otherwise if on windows 10 try Disable DEP.
...in LAN vs AI?
The new AI doesn't work in LAN (unfixable), LAN games vs AI are only possible with old AI from MMH55_utility.exe.
...during AI turns?
This crash happens because the AI is trying to use an artifact merchant. Normally this is prevented by a script, therefore in 99% of cases if this happens it is an installation issue and the cause is one of the issues above under 'multiple possible causes'. Since RC10 Beta the issue can also be fixed during a game using console command that need to be entered before the turn it happens:
However likely, trying to use the command may reveal a much bigger underlying problem with your installation. The issue has also been reported in LAN with AI but I have never been able to test this in LAN with AI players (I simply don't have the hardware). For this reason I have branded the mod not suitable for LAN+AI (also because the new AI doesn't work in LAN at all) and consider using utility.exe for this experimental. Furthermore I cannot verify with 100% certainty the validity of these reports.
Since you cannot use the console to fix the issue in LAN, a possible solution is not using any Dungeon or Academy AI players, or alternatively set artifact merchants in all Academy and Dungeon towns as forbidden in the map editor. I'm only recommending this for LAN, if this happens in singleplayer it is an installation issue. If however the installation issue cannot be found or there is reason to think the script engine malfunctions because of performance issues with your PC or operating system, you could try banning artifacts merchants also (since RC10 Beta, there is a user setting for this). Artifact merchant objects that are placed on the map are not affected by this issue.
MOUSE CURSOR IS FLICKERING ENDLESSLY (and game cannot continue)
Update to RC11 or later! Old saves will still have the issue. This is not to be confused with the flickering hardware cursor issue that exists in the original TOE software, to fix that one simply switch to software cursor.
The cause of this issue is unknown. For some reason some people don't have this issue or extremely rarely. The script engine gives no errors. Likely something with AI and memory. To fix it, set AI Lookahead depth to lowest setting, this doesn't matter much for difficulty, especially if cheats are enabled. If it doesn't work try playing maps smaller than Huge+Underground. SOLUTION: Only one fix has been found sofar, open a savegame before the AI turn in which it happens with utility.exe and pass the turn with the old AI, then save and switch back to the regular exe.
All ingame textures are very washed out and changing graphics settings only fixes it temporarily?
A well known issue with H5TOE engine and older Nvidia graphics cards & drivers and Intel HD graphics. Never reported on 32bit, only 64bit. Switch to your best graphics card (on laptop) and always update your videocard drivers to latest available. There is now a .dll fix for this available in our downloads section.
I cannot save my game because it says there is not enough space on the disk
This happens if you run the game under windows 10 OS and the game is installed on the system disk . (Likely because the current user account doesn't have full control permissions over the location of the save folder). Close the game and right click the icon -> Run as administrator. If this does not fix it install the game in another location or google how to check and modify folder permissions.
I downloaded a custom map, but new heroes are not available?
open map in editor, go to map properties => heroes tab => uncheck all => save map.
Can I play the campaigns in MMH5.5?
All campaigns H5/HOF are included and some people have played them all the way through, but still some anomalies have been reported. This is because the new AI was written for multiplayer and does not understand all original campaign scripts. If you encounter issues you can use the MMH55_Utility.exe to play missions with the old AI, you can basically switch AIs between missions. There are still reports in a few missions of heroes standing still that were supposed to move, this makes these missions easier than original. I currently recommend playing Wulfstan Campaign with MMH5.5_Utility, but the Findan campaign with the default exe since I made some code adjustments for new AI. I also recommend playing some Raelag missions with new AI because it is extremely slow otherwise.
Set artifacts are not working?
Yes they are, but the effects only update after closing the hero screen, if not then observe issues above. Please note the set artifacts were heavily bugged in original game the effects would last on the heroes after unequipping, that's why the system had to be replaced with limited modding possibilities.
The AI progress bar looks weird?
You are using the right exe file, everything is fine.
The AI is still too slow?
The AI makes a scan in the first turn, therefore it is longer. Lower the lookahead depth and/or cut down on the amount of players. Buy CPU with highest clockspeed you can afford, multicore doesn't help.
The AI is too hard?
Activate casual game mode, the setting is located among the starting bonus options, do not use 'restart mission' after loading the map or it will revert to default (unfixable hidden bug). Set AI to defensive. If it is still too hard switch on AI handicap in settings file (see tutorial town management) and if you use RMG don't set neutrals below strong, since that will make AI harder.
The AI is too easy?
Ally them all against you using console command: @H55_ChallengeMe(x) ..where x is your player number, if that still doesn't cut it use instead: @H55_KillMe(x). You can also make this effect permanent in the settings file. (see tutorial town management)
I conquered a Dungeon/Academy town and cannot build a trade guild/artifact merchant?
Human players are limited to 1. This was needed to circumvent an unsolvable gamebreaking CTD issue, also this makes these faction more balanced from a multiplayer perspective and keeps exploration interesting, so I like it.
Why can't I get ultimate (mastery) level skills?
The pendant of mastery system could not be implemented with triple class system (hardcoded), the only real interesting effect (gating devils) is however still available. All the others were mostly boosts of already existing parameters, some of those have been added to the expert level (combat) other overpowered ones not. In the end you can gain much more unique abilities from the 2 extra skillslots.
Where is Nature Luck/Howl of terror etc?
These skills were tremendously overpowered and I have not found a way yet to modify them into a weaker variant. I also strongly believe that any skill that is so powerful that the player feels it must be taken ruins the game, because it breaks the variation and excitement of trying a new build every time.
Why can some non-necropolis heroes get necromancy?
H5.5 has no 'racial skills', it has only 'skills'! I don't know why this gets asked so often since this was totally normal in H3/4. The classes in question can also use it very well, for unique gameplay. 'bad' factions and academy elemental creatures get much less penalty. You don't need to use it of course, it comes very rarely (4%). It is not unrealistic either since as an highly intelligent mage you can learn anything if you set your mind to it.
Why is one of the Titan Upgrades not a shooter?
First of all it is still a shooter, but it shoots with 'call lightning', which is stronger than it was in TOE, but mostly weaker than the regular shot (not always). From a mathematical standpoint there was no reason for titans to be in the TOE at all, since storm titans were exactly the same, but better since their ability was tactically more flexible. So now you have to tactical choice between a strong titan with a weak shot or a relatively weak titan with a strong shot. On a side note: both titans were overpowered in TOE because of the initiative artifacts.
Is there a limit to the amount of creatures you can summon with dragonblood crystals?
There was no proper space in game to tell the math story so I put this here. There is a limit to dragonblood crystals, which for the purpose of balancing any amount of heroes works as follows:
H1 = level of your first hero
C1 = amount of crystals this hero has
The sum of ((H1*C1)+(H2*C2)+(H3*C3)+....)) cannot exceed 800
So at some point you can only get more creatures by getting more towns.
Is MMH5.5 Compatible with NCF?
There is currently an experimental NCF implementation available (RC8b), be aware RMG is not supported and hotseat/LAN might crash, if so try using the utility NCF exe.
Is MMH5.5 Compatible with Sanctuary mod?
No, the class/skill system is too different, among many other issues.
My RMG map doesn't contain any mixed neutral stacks?
You used the wrong exe file for generating the map, use the MMH55-Editor or MMH55-Utility.exe
My RMG maps are messed up, heroes can walk through adventure objects and neutral stacks are colliding with them?
Remove conflicting RTMG.pak from Simonaks RTMG tool from /data folder and regenerate your maps.
All these issues are hardcoded limitations of 31j source code and will probably never be fixed. Superfluous to say, these issues don't need to be reported.
-You cannot play in LAN with AI players (unless MMH5.5 utility.exe is used).
-The hotseat 8 skills etc. buttons look weird, but they work.
-Witch huts cannot fill the 8th slot with a basic skill but can improve the 8th skill to advanced or expert. This issue does not apply to the 7th slot.
-Witch huts sometimes offer a new skill even if you already have a full load, if you accept just nothing happens.
-Some of the scripted effects on artifacts are not immediately visible when placing the artifact in the slot, but they should be after closing the heroscreen and right-clicking on the hero or reopening the heroscreen.
-Set artifact indication serve to show you which artifacts are part of which set, but don't update.
-Barbarians cannot learn both town management and town portal.
-Gold income from artifacts is not shown in kingdom overview, but it does add to your stock.
-8 skills is not available in campaigns.
-Neutral heroes option is poorly balanced and if hidden artifacts is activated they cannot be switched off 100%. It is recommended only to use these features on old maps with too weak neutrals (so not h55 maps).
-Paladins cannot use the training building, extra knights are in the pool to neutralize the issue.
-Some heroes in campaign won't follow a scripted move command, because of issue with source code and this script function. example: necro mission 1