When you create an hopper-clock and put an comparator into subtract mode and link it to a dispenser your world crashes.
Comments 4
This is not a glitch as for check this link https://help.mojang.com/
you cannot say that, he is saying it crashes when you link it to a dispenser, he didn't say anything about servers
Minecraft Version: 14w30b
try again in 14w30c and see if it still occures
Incomplete without a crash report. Please attach it so the issue can be diagnosed.