Help Wireless Redstone Chicken Bones

I do not know if it's a bug but I can not utilirasar the wireless transmitter. The computer does not start, here is the error that appears in the console FTB

2012-12-28 04:55:23 [INFO] [STDERR] Exception in thread "Thread-48" java.lang.AbstractMethodError: codechicken.wirelessredstone.redpower.TileRPTransmitter.attach(Ldan200/computer/api/IComputerAccess;)V
2012-12-28 04:55:23 [INFO] [STDERR] at dan200.computer.core.apis.PeripheralAPI$PeripheralWrapper.attach(PeripheralAPI.java:77)
2012-12-28 04:55:23 [INFO] [STDERR] at dan200.computer.core.apis.PeripheralAPI.startup(PeripheralAPI.java:334)
2012-12-28 04:55:23 [INFO] [STDERR] at dan200.computer.core.Computer.initLua(Computer.java:808)
2012-12-28 04:55:23 [INFO] [STDERR] at dan200.computer.core.Computer.access$1300(Computer.java:26)
2012-12-28 04:55:23 [INFO] [STDERR] at dan200.computer.core.Computer$1.execute(Computer.java:917)
2012-12-28 04:55:23 [INFO] [STDERR] at dan200.computer.core.ComputerThread$1$1.run(ComputerThread.java:67)
2012-12-28 04:55:23 [INFO] [STDERR] at java.lang.Thread.run(Unknown Source)

what it means? and how to solve

This looks like the same bug that was reported in the bugs section. It's a problem in WRCBE, so wait for it to update.