Haven't seen anything regarding this. Maybe just me?
Using FTB Ultimate Reloaded pack, made an automated frame motor door.
Door opens fine, but crashes just before it finishes closing throwing this error.

https://pastebin.com/8yK8dsRr

I've tried the latest Curse version and still get the same errors

Also I'm aware of Optifine being installed in that crash log. I removed Optifine, and still got the exact same crash, so I'm sure it isn't that.

Any insight would be welcome. Thanks

Can you post a picture of your door setup? Also please use the Bug Report issue template next time.

Never mind, was able to reproduce. Working on it...

will still leave here just in case

Left side. Red cable is Close Green is Open.

Right Side. Basically the same but reversed top and bottom.

Logic to control them. It's crude but funtions.

Also I recorded a quick video of exactly how and when the crash occurs
https://youtu.be/zuU77CQYMMU

Thank you. I have verified the fix against a similar door setup.