Hey, I was having a problem with p2p tunnels, whenever I tried to shift right click a p2p tunnel with the memory card it would say "memory card cleared" instead of working.

I don't know if it has been fixed but I had a tinker's construct shovel in my offhand, once I removed it it worked as intended.

you are missing all required informations on versions used, SP or MP and so on ... to properly help you, but i guess you just didn't know that you can also search already closed issues

#4123

might be your answer, but that is just a guess