This is a stretch as I'm replying 2 years later, but it seems I have the exact same issue you were having and this is the 2nd time it has happened to me. Was this a reoccurring issue for you too? Were you able to find a permanent fix? It seems somewhere down the line my emuMMC gets corrupted or...
since i doubled up, or you lost your stack and if i gave it to you instead of running off at the roulette table does that mean i "gave" you a stack lol