Hello, I am a modder. I've begun updating my mod to 1.7.2 using forge 10.12.0.1013 when I realised that when I left a world and then rejoined, all the mod blocks / items disappeared and left this error in the console: http://pastebin.com/8e5Nt7w7. As far as I can see, it's detecting the missing blocks / items and saying that they are missing but still connecting to the world with the mods:
([07:26:42] [Netty IO #3/INFO] [FML]: Client attempting to join with 4 mods : mcp@8.09,FML@7.2.106.1013,Forge@10.12.0.1013,AtomicAPI@v1)
I was wondering whether it was:
A bug in forge
An issue that I needed to fix
If it was a mistake on my part, how would I go about fixing it and what are the common causes of this error?
Thanks