[UMG]Getting an error upon saving level

Getting this error message upon saving:

Can't save D:/User/*/Documents/Unreal Projects/*/Content/Maps/Example_Map.umap: Graph is linked to object(s) in external map.
External Object(s):
Building_GeneralInfo_C_6
/Engine/Transient
Building_GeneralInfo_C_7
Building_GeneralInfo_C_12
Building_ProductionInfo_C_3
...
  
Try to find the chain of references to that object (may take some time)?

Building_GeneralInfo and Building_ProductionInfo are two UI Widgets which inherit from a BaseButton UI Widget. They’re all just buttons with a text block inside them. Not sure how to clear up this error.

Edit: Some more info. It seems to always occur when i try to create an instance of the button from blueprint. My goal is to have an array of BaseButtons that i can pull from from my UI. It seems like for some reason I cannot add these buttons BPs to an array.

Edit 2: Another ‘Bug’. Using Create Widget, and it doesn’t seem to detect any BPs that don’t directly inherit from UserWidget.h. It works with only my BaseButton, but not anything that inherits from it.

Hi Makotech222,

Have you been able to reproduce this in a clean project with no additional content?

I think i may have fixed it. It seems like UE4 doesn’t like copying and pasting blueprints. I copied and pasted all of my basebutton BPs. Creating them manually pretty much fixed all of my issues.

Hi Makotech222,

If you had any custom variables in your blueprints that is a high possibility. However I am happy to hear that you have fixed your error. I will mark this as answered for tracking purposes. If you continue to experience this error, please comment back and let us know so we can continue to look into this. Have a great day!