undefined struct 'FVector', undefined type 'FVector'

[3dRaven]

Ok I got my update to work

I cleared all temp file and folders

• .vs
• Binaries
• DerivedDataCache
• Intermediate
• Saved
  files
  .vsconfig
  Attempt8.sln

copied over your info into the uproject.

Regenerated & compiled

Compiles with no more lingering strange errors
Attempt8.zip (14.1 KB)

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Something worth checking

Can you post the header and cpp file containing the spring arm component?

Could it be that you are lacking the .generated.h include at the bottom of the includes in your header file of that specific class / struct?

500×500 2.84 KB

The xxx.generated.h is used for files/classes that derive from UObject. It’s part of making all those crazy macros like (GENERATED_BODY() work. It’s also part of their precomputed header system. If you use the class wizard and derive from “None” instead, you don’t need it (and still able to use FVector). However, instead of using a class wizard to create a header file that will only have enums and structs that don’t interact with Unreal’s systems, you can just create a text file in the same …

Without seeing the files makes it had to track down the source of the error.