If you place a filled fuel can in a non-burning generator the game crashes to "Saving Chunks" (blurry Saving chunks). Only happens if the generator is empty. This also duplicates the fuel can and if you reload the map the generator is running. Need to test what happens if the generator runs out of fuel and tries to use the can then.
Error log:
Code
Mods loaded: 2
ModLoader Beta 1.7.3
mod_IC2 v0.90
Minecraft has crashed!
----------------------
Minecraft has stopped running because it encountered a problem.
If you wish to report this, please copy this entire text and email it to support@mojang.com.
Please include a description of what you did when the error occured.
--- BEGIN ERROR REPORT fcf71260 --------
Generated 30.08.11 15:14
Minecraft: Minecraft Beta 1.7.3
OS: Windows 7 (x86) version 6.1
Java: 1.6.0_27-ea, Sun Microsystems Inc.
VM: Java HotSpot(TM) Client VM (mixed mode), Sun Microsystems Inc.
LWJGL: 2.4.2
OpenGL: GeForce GTX 580/PCI/SSE2 version 4.1.0, NVIDIA Corporation
java.lang.NullPointerException
at ic2.TileEntityGenerator.gainFuel(TileEntityGenerator.java:79)
at ic2.TileEntityBaseGenerator.n_(TileEntityBaseGenerator.java:120)
at fd.g(World.java:1407)
at net.minecraft.client.Minecraft.k(SourceFile:1494)
at net.minecraft.client.Minecraft.run(SourceFile:754)
at java.lang.Thread.run(Unknown Source)
--- END ERROR REPORT 187397dd ----------EDIT: Also crashes if the generator tries to use the fuel can after the currently burning fuel ran out. Crashes no matter if you are in the generator interface or not.