I released a 1.4.2 version that fixes a critical bug on Magna's route for new players.

Critical meaning it causes your file to be unplayable if you encounter the error. 

If you are stuck on Magna's story permanently, you will need to install 1.4.2 and load a file from before you begin training with her.

I'm sorry for the inconvenience this has caused!
If you are playing on an older file that has already hit the end of Magna's story, you should be ok with 1.4.1

I would still recommend an update, but you can probably wait until 1.5.0 (Twins) update.