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This is a list of common issues that you may encounter with downloads and how to fix them. If your problem is not in this list, feel free to leave a comment on this page or make a thread on our Help & Support Board.

Please note that for some of these fixes you will need to open the .z2f (Zoo Tycoon 2) file. They work just like a compressed folder in .zip format, so you can open and edit the folders inside using any zipping program like Winrar, Winzip or 7-Zip.

As a general note, if you are having a problem and you are not sure what is causing it, it's advisable to temporarirly remove downloads from your ZT2 folder and test if the problem persists, so you can locate the problematic and/or conflicting file(s).

While this list is meant for people fixing their downloads, it can also be worth the read for designers trying to fix bugs in their work.

General DownloadsEdit

Download not showing up ingame Edit

If the content you downloaded is not showing up ingame (animals or objects are not in the selection menu, hacks have no effect, reskinned animal still use the old skin), try the following solutions:

1. Make sure you are placing the files in the directory where your game is installed. For Windows 10 users the default installation directory will be C:/Program Files (x86)/Microsoft Games/Zoo Tycoon 2. Place your .z2f files exactly in this folder, not any subfolder. Even if you have the Amazon digital download version, you still need to place files in the bolded directory, not in the downloaded folder.

2. Make sure the file you downloaded is in .z2f format.

  • If it is in .rar or .zip format, you must use a zipping program to extract the .z2f file(s) from inside the compressed file. Once they are in .z2f format, you don't need to extract them further.
  • If your download is in .exe format, run it by double clicking and it will install the files in your game.
  • If your download is in .z2s format, it's a saved game. You can right click it and open with Zoo Tycoon 2, and you will launch the game right in the map.
  • If it's in a format not listed above, read the instructions at the download page carefully as it might need a special kind of installation.

3. Check for any possible conflicting downloads. When two downloads affect the same files, for example a remake and a hack for the same animal, only the last one in alphabetical order in your ZT2 folder will be read properly. Try removing the conflicting download, or rename your file of interest with several "z" so it is last in alphabetical order.

4. Some animals are objects are called "remakes" but they don't actually replace the original, so make sure to search for them in the menu if the original animal is unchanged.

5. Make sure you have all required official expansion packs. A lot of usermade content may require official expansion packs.

6. If your download is a map file, check the maps section.


No name ingame Edit

Blank name animal

An animal with no lang file will be called "1", "2", "3", etc. after placement

If your animal or object has no name ingame and it's just blank (or "1", "2", "3", etc. for animals), it simply does not have a working language file for your game language, this will have no effect on gameplay.

1. Most downloads are only coded in English and sometimes one or two more languages, so if your game is not in English it will likely be unnamed. Try the following:

Open the .z2f and check for the "lang" folder.

  • If it's missing, the creator simply did not create a language file for their download. You would have to create one yourself.
  • If it's there, open it and you will see one or more folders with numbers as names. These are language codes, as follows:
    • 1028 = Chinese
    • 1031 = German
    • 1033 = English
    • 1036 = French
    • 1040 = Italian
    • 1041 = Japanese
    • 1042 = Korean
    • 1045 = Polish
    • 1043 = Dutch
    • 1046 = Portuguese
    • 1053 = Swedish
    • 3082 = Spanish
  • If your language code is missing, you can copy one of the existing folders and rename it to your code. This will cause your animal/object to have name ingame, but it will be in another language (for example if your game is in Spanish and you rename the 1033 folder to 3082, this animal/object in particular will have an English name in your game). If you want to fix this, you will have to go inside the numbered folder and edit the .xml file inside, translating the names and/or zoopedia as you like.

If the language code for your game language is there but it still has no name ingame, the lang file might have a mistake causing it not to be read. Go inside the folder and try to open the .xml file with a browser (e.g. Google Chrome, Firefox)

  • You might get an error message telling you what's wrong in the file, fix it and try opening it again until you don't get an error anymore.
  • If you don't get an error message, there might be another issue with the lang file, like a wrong codename.

2. Missing names can also happen when the download file is not in the correct folder (C:/Program Files (x86)/Microsoft Games/Zoo Tycoon 2), see above.

White icon Edit

White icon

White square caused by missing selection icon

An icon that is just a white square in the menu means the game can't locate the image for the animal or object icon. This can happen for the following reasons:

1. If the game crashes when you click on it, you probably have a hack that affects an animal or object that you don't have (for example a biome hack for an animal you are missing). To fix it either remove the hack or download the missing file(s).

2. If you can place the animal or object despite the white icon, check for download conflicts. Otherwise it might be a mistake by the designer.

  • To manually fix this, go to the main object or animal xml (or the male and female xmls, if the animal has dimorphism) and search for default image=, and make sure it links to the correct route for the icon. If there is no existing icon you will need to make one yourself.


Full White ModelEdit

If your animal or object can be placed but has an all-white model, it means the skin didn't load properly on the .nif model. Try the following:

1. Make sure your graphic settings are on max detail, as some skins might not display properly on lower settings.

Making Renders6

Link the skin to the model in Nifskope by clicking this purple flower icon and typing the skin name.

2. Open the .nif file (entities/units/animal/CodeName/CodeName_Adult_F.nif or similar) using Nifskope and make sure the texture is linked properly, then save changes.

3. If the animal has variants, open the main or adult .xml and make sure the coding link to the correct skins.

4. Perform the white animal fix.


Pink Skin

This bright pink skin means a .bfb model is missing its corrrect texture.

Bright Pink Skin Edit

Animals or objects display a bright pink texture with a yellow "A" and blue dots. This happens when a .bfb model is missing its materials.

1. Make sure you have all required downloads, as the missing texture might be included in a separate file.

2. Check for conflicting downloads.

3. If it's a designer mistake, you can fix it going to the CodeName folder (entities/units/animals/ai/CodeName for animals, different route for foliage and objects) then to the Materials folder and making sure the .bfmat file is linking the correct skin.


AnimalsEdit

Animals not moving after placementEdit

If your downloaded animal is placeable but just stays frozen without moving, try the following solutions:

1. Make sure you have all required official expansion packs. Many usermade animals use animations that are included in expansion packs, notably birds (AA) aquatic animals (MM) and dinosaurs (EA), and won't work properly if you don't have them installed.

2. Make sure you have all required downloads stated in the wiki page and/or download page you got your download from. There are several usermade animations sets that you might need for your animal to work, notably for:

And others not featured in this list.

3. You might be missing the taxonomy files for your animal, if they are not contained in the base game. You can check this by opening the .z2f file with a zipping program and going to entities/units/animals/ai/CodeName.xml and check the tag list at the start of the file. Try looking for the base animal your animal of interest is based on, or create the taxonomy .xml file yourself.

Game crashing when clicking animalEdit

If your game closes when you click an animal on the menu:

1. You might be missing required downloads or expansion packs.

2. The download itself might have corrupted xmls, bfms or model files.


Game crashing after placementEdit

If your game closes after you place a particular animal, you might be missing required downloads or expansion packs.

Secretary bird conflict

Example of messed up textures caused by download conflict


Messed up texturesEdit

If your animals are showing up with messed up textures:

1. Check for any possible conflicting downloads. When two downloads affect the same files, for example a remake and a hack for the same animal, only the last one in alphabetical order in your ZT2 folder will be read properly. Try removing the conflicting download, or rename your file of interest with several "z" so it is last in alphabetical order.

2. If you downloaded an animal remake and opened an old saved game, some textures might not load properly. Try opening a new game and placing brand new animals, as this might fix the problem.


Blinking animalEdit

Many animals have blinking coding, but it sometimes does not work properly, causing the whole animal to blink instead of just the eyes. One way to fix this is removing the blinking coding altogether. Go to the animal's main .xml (entities/units/animals/ai/CodeName.xml) and look for: <BFDecalTextureCycleComponent. Delete several lines until and including </BFDecalTextureCycleComponent> and the animal should stop blinking.


Pink square with a yellow A under animalEdit

Pink selection icon

Animal displays a pink square when selected, meaning the custom selection image is mssing.

When the animal is selected, a large pink square with a yellow "A" appears on the ground. This happens when animals have a custom selection icon coded, but the game can't find the texture. Try the following:

1. If the animal is part of a pack, check for a filter or "download this first" file, as it might include the custom selection image you are missing.

2. If you are unable to get the selection image, you can simply remove the custom icon from the animal's coding. Go to the main .xml file (entities/units/animals/ai/CodeName.xml) and search for the following: <ZTEntitySelector> and delete everything up to and including the closing tag </ZTEntitySelector>.


Unnamed eggsEdit

Unnamed egg

"unnamed" egg bug

This bug is different from the blank name resulting from missing lang files, as it will cause eggs from all animals (even base game animals) to be called "unnamed".

This bug is caused by certain downloads having a buggy egg xml. Some known offenders are Ludozoo's Ornithomimus, Ludozoo's Emu and Tyranachu's Jurassic World Mini Pack. To fix it you have to options:

1. Delete the problematic download from your ZT2 folder.

2. If you want to keep the download, you can fix the problem by going to entities/units/objects/eggs/ai and deleting the file egg.xml.

Black animal

Black animal in the selection window


Animal is black in selection windowEdit

Most likely a mistake on the designer's part, can be fixed by configuring the NiAlphaProperty.
NiAlphaProperty Flags

NiAlphaProperty flag configuration


Animal is invisible under waterEdit

Most likely a mistake on the designer's part, can be fixed by configuring the NiAlphaProperty.


Animals don't have variantsEdit

Not all usermade animals have variant skin coded, but for those that do, you will need to turn your graphic settings to max detail in order to see them.


ObjectsEdit

Animals or guests don't use objectsEdit

Not all objects are properly coded to be functional ingame, so if your animals aren't eating a certain food, playing with enrichment or resting in shelters you downloaded, or your guests aren't sitting on benches or buying from certain stands, there is a high chance the designer never coded that particular object to be functional and is just meant for decoration. Check the wiki page for that item, and if you see a box with the text "This object cannot be used by animals or guests", it is just decoration.

If that is not the case and you are certain that it should work, try the following:

  • Check for anywhere/non grid hacks. In some cases, animals and guests will have trouble interacting with objects that are placed off the grid. Remove your hack and check if it fixes the problem.

MapsEdit

Downloaded maps not showing upEdit

Saved maps are in a different format, .z2s, and they are installed differently. You have two options:

1. Right-click the .z2s file and click Open with... then choose Zoo Tycoon 2 as the program. The game will open directly on the map, skipping the main menu.

2. If you want the map on your saved games list, search for %appdata% on your windows search bar and go to Roaming/Microsoft Games/Zoo Tycoon 2/Default profile/Saved (or another profile if you have one), then paste the .z2s file there. The downloaded map will be on the saved games list next time you launch the game.


OtherEdit

Black Terrain Bug

Black terrain bug caused by having too many downloads

Black tiles on terrain Edit

If your maps have black patches with no texture, it's a symptom of memory limit. To fix this, simply remove some downloads from your ZT2 folder until the problem is fixed.


Game language changed to German Edit

If your game which was originally in other language is suddenly in German, you might have downloaded the file zzzDeutsch-German-lang.z2f. Delete it to return your game to normal. And in the future don't download files for your game if you don't know what they are.

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