So I've noticed that several people have been having problems with the Force Energy Extractor, myself included, but I haven't seen any kind of fix or anything posted. I'm sure the problem is being looked into, but in my experience when I install Universal Energy the force extractor breaks and stops working, whereas when I uninstall Universal Energy the force extractor starts working again. I am probably missing something because the creator of Universal Energy is here working with ThunderDark, and he apparently isn't having issues because he is shooting missiles at force fields, which I admit is the reason I went and got Universal Energy and ICBM. Anyway, this is just my experience, and I may be way off the mark here, but I couldn't find much info on the subject. Love the forcefields though, that was one of the things I missed most from IC to IC2, and the modular system is such a better system then the old one. 
for you
Here's my error report for completeness.
Display Spoiler
---- Minecraft Crash Report ----
// I blame Dinnerbone.
Time: 9/25/12 9:16 PM
Description: Unexpected error
java.lang.NullPointerException
at chb.mods.mffs.common.BlockMFFSBase.a(BlockMFFSBase.java:152)
at si.placeBlockAt(ItemBlock.java:198)
at si.a(ItemBlock.java:86)
at rj.a(SourceFile:88)
at atc.a(PlayerControllerMP.java:345)
at net.minecraft.client.Minecraft.c(Minecraft.java:1306)
at net.minecraft.client.Minecraft.l(Minecraft.java:1718)
at net.minecraft.client.Minecraft.J(Minecraft.java:834)
at net.minecraft.client.Minecraft.run(Minecraft.java:764)
at java.lang.Thread.run(Unknown Source)
Relevant Details:
- Minecraft Version: 1.3.2
- Operating System: Windows 7 (amd64) version 6.1
- Java Version: 1.7.0_07, Oracle Corporation
- Java VM Version: Java HotSpot(TM) 64-Bit Server VM (mixed mode), Oracle Corporation
- Memory: 358291792 bytes (341 MB) / 646578176 bytes (616 MB) up to 954466304 bytes (910 MB)
- JVM Flags: 2 total; -Xms512m -Xmx1024m
- FML: FML v3.0.196.366 Minecraft Forge 4.1.1.251 9 mods loaded, 9 mods active
FML [Forge Mod Loader] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
Forge [Minecraft Forge] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_CodeChickenCore [CodeChicken Core] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_NotEnoughItems [Not Enough Items] (coremods) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
UniversalElectricity [Universal Electricity] (Universal Electricity_v0.8.5.171.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ICBM [ICBM] (ICBM_v0.5.4.15.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
IC2 [IndustrialCraft 2] (industrialcraft-2_1.106.jar) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
mod_InvTweaks [Inventory Tweaks] (InvTweaks-1.43b-1.3.2.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
ModularForceFieldSystem [Modular ForceField System V2] (ModularForceFieldSystemV2.1.7.0.18.zip) Unloaded->Constructed->Pre-initialized->Initialized->Post-initialized->Available->Available->Available
- LWJGL: 2.4.2
- OpenGL: GeForce GT 555M/PCI/SSE2 GL version 4.1.0, NVIDIA Corporation
- Is Modded: Definitely; 'forge,fml'
- Type: Client
- Texture Pack: Default
- Profiler Position: N/A (disabled)
- World MpServer Entities: 7 total; [atg['zerix807'/234, l='MpServer', x=-8.44, y=68.62, z=1.21], mp['Cow'/122, l='MpServer', x=-11.94, y=67.00, z=12.06], EDaoDan['Conventional Missile'/121, l='MpServer', x=-13.50, y=69.00, z=8.50], mo['Chicken'/130, l='MpServer', x=3.38, y=65.00, z=9.59], mo['Chicken'/106, l='MpServer', x=-33.14, y=67.00, z=5.56], mp['Cow'/85, l='MpServer', x=-37.85, y=66.00, z=17.70], mp['Cow'/83, l='MpServer', x=-41.63, y=68.00, z=0.04]]
- World MpServer Players: 1 total; [atg['zerix807'/234, l='MpServer', x=-8.44, y=68.62, z=1.21]]
- World MpServer Chunk Stats: MultiplayerChunkCache: 310
- Forced Entities: 7 total; [mp['Cow'/85, l='MpServer', x=-37.85, y=66.00, z=17.70], atg['zerix807'/234, l='MpServer', x=-8.44, y=68.62, z=1.21], mp['Cow'/83, l='MpServer', x=-41.63, y=68.00, z=0.04], mo['Chicken'/130, l='MpServer', x=3.38, y=65.00, z=9.59], mo['Chicken'/106, l='MpServer', x=-33.14, y=67.00, z=5.56], mp['Cow'/122, l='MpServer', x=-11.94, y=67.00, z=12.06], EDaoDan['Conventional Missile'/121, l='MpServer', x=-13.50, y=69.00, z=8.50]]
- Retry Entities: 0 total; []