One of my teammates used GetWorldLocation and at certain point the packaged build did not work anymore. I happend to found out it was the target point, but we did not realized it was due Target Point → Get World Location.
The GetWorldLocation setting to zeroes is a known issue for mobile, is that the platform for which you are packaging? I did not see a packaged version in your zipped project, only the uproject. Does the location reset when you play in editor on the mobile preview?
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I have added the crash log as requested and saw in the crash log that there is some stack overflow in UObject.h. Since I do not have the source version of the engine I have no clue what may cause it and how to fix it. I have also updated the description and added that this problem occurred for the platform Windows.
I was not able to upload a packaged build due 201MB filesize and 5MB upload limit. So you have to package the project yourself, my excuses for this.
I hope I have reported enough information for you for further investigation. If you miss anything feel free to let me know.
I have used your project to try and reproduce the crash in binary editor 4.7.6. When I play in editor I can see the BP_Box move as intended.
I unlinked the Get Actor Location node and only used the Get World Location node. I was able to package for Win 64 without error, however when I ran the project .exe I just get a black screen and no crash. Had you seen this behavior in your project at any point?
Target Point Actor > “Get World Location” = Causes black screen and can’t continue to start the level. Since I was not sure if this is a crash or a bug, the application doesn’t run normally as expected, I have reported this as a crash.
A fix to a similar issue to yours should have been included in the 4.8 preview 2 update. Can you try making a copy (do not convert in place) of your project and attempting the same blueprints setup in the preview and see if you’re seeing the same issue?
I have tried it with Unreal Engine 4.8 Preview 3, and noticed some extra changes in the nodes (See the screenshot with the red square as highlight). After package the project, I have no black screen anymore. Except the Platform still moves to Location 0,0,0.
I have more information about the SpriteComponent location issue. This is by design; the SpriteComponent will soon not exist in packaged builds (for perf reasons), so you have to use the RootComponent instead.