Game Crashes

If at any point during modding, you find that your game has crashed or are met with the Unreal Engine Error Reporter, a detailed error report will automatically be copied to your clipboard, even if it does not appear on screen. You can simply Ctrl+V or paste into a text editor to see the full error.

Bellow are some common crashes and solutions to them.

FAsyncPackage::FindExistingImport class mismatch MaterialInstanceConstant != Material

• This crash occurs when you assign a material instead of an expected material instance when creating your references in unreal engine editor. Make sure to double check umodel and the original .uasset to see what type of onject the game wants linked. Things prefixed with MI_ are usually material instances, which are different from materials.

Model Issues

Sometimes the game won't crash, but your model will still appear incorrectly, here are some symptoms and common causes.

Model is too Large

• This can happen if you forget to change your export scale in blender from **1.00 ** to 0.01 See the Import/Export Quick Reference for more settings.

Model does not Animate

• This can happen if the correct skeleton is not set Unreal Engine Editor, or if the skeleton referenced is not in it's correct folder. Double check that your mesh has the proper skeleton assigned, and that you've placed that dummy skeleton in the correct location. Usually your skeleton will be Basic_Skeleton in the Content\BasicAssets\Skeleton\ folder. Double check your other references too while you're here, others may be off too!

Model has no Textures

• If you forget to assign a material or have the material incorrectly assigned in Unreal Engine Editor, your model may appear with gray squares covering it. Similar to the no animation issue, make sure that you have assigned the material or material instances correctly for your model. The materials should have the same name and be located in the same folder as their original location.
• Another cause for this may be that you have packed your placeholder material unintentionally when creating your .pak. Make sure you pack only the files you modify, and not the placeholder files you created for references. See the page on packaging for more details.

Texture Issues

Like models, you may have issues even if the game does not crash, here are some solutions based on their symptoms.

Symptom

• Solution.