Ever lost many hours put into a game because of the game's design?

[Theory]

In LittleBigPlanet I had aced through all the main story modes trying to get a trophy but the game wouldn't save my data. It was only afterwords that I realized that I had too many community items making my game unable to save. So I lost about 10 levels of perfect playthroughs and had to replay each one to finally get the trophy.