Is there something special that needs to be done with the defense upgrade? I'm running v2beta4 on my SMP server and adding the defense (touch damage) upgrade to one of the 'opt' slots in the projector doesn't appear to do anything. I tried with both the wall and deflector types. It doesn't turn red or deal damage on contact from either side.
Edit: beta5 = <fix> MFFS Projector Upgrade <touch damage> not work in Beta4
You know what Graypup, I don't think I like your tone. (jk) Also, ya, when I said "I think I may just be an idiot" that was one of the revelations I came to, along with the fact that I had actually attempted to craft one of my MFFS "test items" incorrectly. I'm such a good troll, I actua.... No, I just derped it up today 
You're correct, in that those items didn't work, but I think I may just be an idiot. I got RecipeBook working and started clicking around. I'm going to do some experimentation at home (I've been messing with this off and on at work today). metalearza, I think you may have solved this for me inadvertently, so I thank you for that. I'll be back on here if it decides not to work on my home computer.
have you tried using NEI just to make sure the recipes appear?
I have not, but that would involve, ModLoader, ModLoaderMP, and Forge (some known compatibility issues there). I tried the patch yesterday to get those 2 to play nice and did not have much luck, so I really don't want to do that. How could the blocks be available, but not the recipes? I tried some easy ones like the stack of FocusMatrix or the SubWater upgrade (which I know I am doing correctly) and the output square from the crafting table is empty. I moused-over and clicked on it to make sure it wasn't just the graphic being buggy.
i cant seem to figure out the problem your experiencing now, i tested it and it works fine for me. by the way im using multimc application in installing mods. it makes installing easier on client side.
I downloaded MultiMC 3.1 for Windows and was unable to get the game to run at all. I dropped computer craft and just loaded forge (under the minecraft.jar tab) and then IC2 and MFFS (under the /mods tab). Game starts just fine but I am still unable to actually craft any blocks. I'm going to go get fresh copies of all the mods in case I got some bum-version.
Edit: I threw on TooManyItems and can place the MFFS blocks, and see their GUI's and everything. I spawned myself the items needed to craft some of the upgrades and the force generator block, and nothing. I can still, however, craft the blank cards. I made a fresh crafting table, thinking they may have been bugged, but still nothing.
Metalearza suggested I post the mods being used: I'm rocking Minecraft Forge 3.3.8.152, IC2 V1.97, and Computer Craft 1.33 (which includes CCTurtle 1.33). I have IC2 and Computer Craft in the mods folder for the server. Forge's files were thrown directly into the server jar, and that's all worked correctly for more than a month.
I was doing some testing earlier (client-side) and tried adding the MFFS files directly to the top layer of the IC2 jar and starting a single-player game but I had the same problem (Can only craft items). This is the first add-on I've tried for IC2, maybe I'm missing something easy?
edit: grammar 
You're right, it's Thunderdark's, but it still requires the Immibis Core to run if I'm not mistaken!
Edit: I've got it running on the server, but can only craft items (focus matrix, cards, etc.). Any of the blocks just don't seem to be craftable.
Edit: I removed Immibis Core from the server and client and it runs the same, so I guess I don't need core. Still can't craft any of the blocks 
So I throw immibis core into my server's 'mods' folder and the server launches just fine. When I create a folder for mffs and extract the v2_beta4 zip contents into it, I get the following when trying to start the server:
java.lang.IllegalArgumentException: Slot 4078 is already occupied by mffs.BlockDefStation@6779e6 when adding mffs.BlockDefStation@174219d at vz.<init>(Block.java:251) at sz.<init>(BlockContainer.java:7) at mffs.MFFSBlock.<init>(MFFSBlock.java:18) at mffs.BlockDefStation.<init>(BlockDefStation.java:23) at mod_ModularForceFieldSystem.load(mod_ModularForceFieldSystem.java:104) at cpw.mods.fml.common.modloader.ModLoaderModContainer.init(ModLoaderModContainer.java:351) at cpw.mods.fml.common.Loader.modInit(Loader.java:263) at cpw.mods.fml.common.Loader.initializeMods(Loader.java:604) at cpw.mods.fml.server.FMLServerHandler.onLoadComplete(FMLServerHandler.java:147) at net.minecraft.server.MinecraftServer.s(MinecraftServer.java:204) at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:412) at dn.run(SourceFile:492)I tried changing the BlockID in the cfg file but it gave the same error with each new ID. Thoughts?
Edit: Spelled Immibis's name incorrectly