This thread is almost 2 years old, but it keeps coming up in my searches. I just figured out a possible fix and I wrote about it here:
TL;DR delete the old save game files.
@xDashGG the difference in your two screenshots might be the Cast to BP_SaveGame. I had a problem where I changed my saved game format and I think the cast was failing. So the solution is what @ClockworkOcean suggested: delete the old save game file.