Bug in 4.9 & 4.10
Deleted struct break blueprints:
A.) Create a new Blueprint for example of type actor and a new structure in the same folder.
B.) Open the blueprint and add a var with the type of the new struct save all.
C.) Delete the structure from the folder and then open the Blueprint.
D.) At press save or compile the var hide and give error always at compile = broken Blueprint.
*At delete the structs break all the blueprints but the enums no and replace the enum with a byte.