UMG widget from Character BP not showing if I add it to the viewport in the level BP after packaging

Hi there, I’m having the following problem.

I created a UMG widget and I want to display it when the level starts and also when a key is pressed.
When I press play in the editor it works as expected, but when I package the project the UMG never loads, any hints on how to solve this.

I’m working on UE 4.8.1 windows version. I’ve tried packaging it for 32 and 64 bits with no luck.

Here are my BP (well the relevant parts).

Level BP:

CharacterBP:

Widget:

Preview:

Package:

I don’t know how to test this as this happens after packaging, everything works as expected in the editor.

Thanks in advance for your help.