Forge Mod Upgrading Causes Invisible Blocks

[Abs0rbed]

Hi, so I wanted to install Thermal Dynamics on my server, so I installed it, which meant I had to update APIs and other things. When I went to load the world from my server, it told me that there were now blocks/items that couldn't be found and asked me if I wanted to remove them. I clicked yes and after it loaded tons of blocks have stopped rendering and I have no idea what could've caused it. I upgraded from forge 1230 to 1291 in the process as well.

 

Here are some screenshots of the blocks now.

https://imgur.com/DcVLYYE,prMzKEj,1tYQcxe,t6CtVwV,4fCrasb,8hKgWvd,AKMbkAq,fF0lPaG,nmPnjnk#0

 

My client log is 10Mb, a bit too large for a gist of pastebin unfortunately.

Any help is appreciated, I've tried pretty much everything to make it work

[LexManos]

Remove/update optifine.