Block fail.

[Conker5295]

Hey guys i have a problem with a forcefield block. its the heat monitor or something like that, everytime its loaded the server crashes. is there a way to fix this? can i disable immobis force fields? here is the error it gives me anytime the block loads:

08:26:44 [INFO] Sending serverside check to: jvon711

08:26:44 [SEVERE] java.lang.ClassCastException: mffs.TileEntityReaktorMonitorClient cannot be cast to mffs.TileEntityPassivUpgrade

08:26:44 [SEVERE] at mffs.TileEntityProjektor.checkupgrades(TileEntityProjektor.java:119)

08:26:44 [SEVERE] at mffs.TileEntityProjektor.q_(TileEntityProjektor.java:338)

08:26:44 [SEVERE] at net.minecraft.server.World.tickEntities(World.java:1190)

08:26:44 [SEVERE] at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

08:26:44 [SEVERE] at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

08:26:44 [SEVERE] at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)

08:26:44 [SEVERE] Unexpected exception

java.lang.ClassCastException: mffs.TileEntityReaktorMonitorClient cannot be cast to mffs.TileEntityPassivUpgrade

at mffs.TileEntityProjektor.checkupgrades(TileEntityProjektor.java:119)

at mffs.TileEntityProjektor.q_(TileEntityProjektor.java:338)

at net.minecraft.server.World.tickEntities(World.java:1190)

at net.minecraft.server.MinecraftServer.w(MinecraftServer.java:569)

at net.minecraft.server.MinecraftServer.run(MinecraftServer.java:467)

at net.minecraft.server.ThreadServerApplication.run(SourceFile:492)