I had my AE2 system inside a machine from said mod, and only when WCT is installed can I not:

A. Use auto-crafting while inside the machine.

B. Open the in progress crafting tab without the game crashing.

Unsure if it only happens in a world already made or just with AE systems inside the machines. Will test here in bit under both circumstances.

test without wct and also i will need to know what version of WCT you are using..pack also if applicable

Autocrafting and accessing the current crafting tab works fine without WCT while in the machines.

Version I am currently using: WirelessCraftingTerminal-1.7.10-rv3-1.8.7.4b

Mod List, have fun.
Mod List.txt

1.7.10 hasn't been supported for around 10 months now, sorry