Do you want to use LabyMod and ReplayMod together? Just follow those steps to get it working:
- Install LabyMod with Forge for the Minecraft version you want.
- Open your ".minecraft" folder and open the "mods" folder. LabyMod and possibly Optifine should already be in there.
- Download ReplayMod for your Minecraft version.
- Move the ReplayMod file into the "mods" folder.
- Start Forge for your Minecraft version using the Minecraft launcher now.
You should now be able to use LabyMod and ReplayMod together.
- Try to remove the BetterPerspective addon.
- Try to remove every other mod than ReplayMod, LabyMod and Optifine from the "mods" folder.