A partial log for the error:
http://pastebin.com/zQWrCCG9
Then the item disappears from creative and NEI.
I don't think there is further log needed :)

@ishitatsuyuki also please describe what did you want to do when this exception happened.

Btw, if it is possible, we really appreciate if you use Gists to upload logs since it's more readable and more reliable than Pastebin. Also you can upload even bigger logs to a gist.

Versions of Forge, BC, LP and in this case your cofh mods, please.

OK, here you are:
CoFHCore-[1.7.10]3.0.3B2-294.jar
MineFactoryReloaded-[1.7.10]2.8.0-104.jar
ThermalDynamics-[1.7.10]1.1.0B2-149.jar
ThermalExpansion-[1.7.10]4.0.2B2-210.jar
ThermalFoundation-[1.7.10]1.2.0B1-95.jar
buildcraft-7.0.13.jar
buildcraft-compat-7.0.8.jar
logisticspipes-0.9.1.15.jar

Description of what i was doing:
Get the Machine from Creative Inventory and place it, then .
BTW, it doesn't disappear from survival inventory.