A player wrote to me about a possible glitch in Rune Factory Frontier. She defeated the Giant Clucky for the first time on a Holiday in Winter and was unable to unlock the Lava Ruins at all. She waited and waited but the sapling never grew to the point where the Rune Stone could be inserted.
Incidentally, she waited for weeks and even in Spring, the sapling failed to grow any further.
She started a new game and had no trouble unlocking the Lava Ruins in her new file. She therefore believes that there may be a glitch that prevents the game from recognising the defeat of the Giant Clucky for the purpose of advancing the story when the defeat occurs on a Holiday in Winter. I need to discover still if she defeated the Giant Clucky on an ordinary holiday or a Festival Day.
This is not a problem ordinarily, by the way. I was able to obtain the Crystal Flowers from Eligible Girls on the day of the Hotpot Convention and open the Portal to the Era of Disconnect on that day. Other players have been able to defeat the boss of the Lava Ruins on the day of the Pumpkin Festival and move on to unlock the Snow Ruins... It probably is a very specific glitch, therefore, that pertains solely to the Giant Clucky and the Lava Ruins and a single Holiday in Winter.