Q: Help! Everything is broken! Items/Enemies/Bosses/etc are completely broken! Sprites look wrong! etc.

• A: Isaac has a faulty implementation for copying mods over from the Steam Workshop download folder on your computer into your normal mod folder. You can manually copy the folder for FF into your normal mods folder, or download from the mirror in the description
  

Q: Why does the streak text for Catacombs, Necropolis, and Utero show I, II, and XL? Why does the overlay for Womb look weird?

• A: These are well known StageAPI issues. They are unfortunately unfixable
  

Q: The boss music is playing on an unrelated boss! It's not working at all in Catacombs/Necropolis/Utero!

• A: This is a limitation with StageAPI's music system. A new API will be added to it eventually to properly support the boss music
  

Q: Objects are appearing in crawlspaces from black markets/the Revelations hub?

• A: Known issue. We haven't nailed the cause yet, but it's on our radar
  

Q: The normal starting room controls are rendering with Fiend's?

• A: A new system was added to StageAPI to support this that not all mods use yet; mods that have not updated to support it will cause this issue when running alongside FF/StageAPI. Known mods include Rebecca, Revelations, and Community Remix Remixed