Error when trying to upload to Rumba card

I want to calibrate my Bulldog lite but when i try to upload the new changes to my RUMBA i get an error message when i compile. This is driving me crazy. using Arduino 1.06 got the rumba from makerfarm
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Arduino: 1.0.6 (Windows NT (unknown)), Board: "Arduino Mega 2560 or Mega ADK"
LiquidCrystalRus.cpp.o:C:\Users\DADS\AppData\Local\Temp\build5969387326602413889.tmp/LiquidCrystalRus.cpp:67: first defined here
l.cpp.o:C:\Users\DADS\AppData\Local\Temp\build5969387326602413889.tmp/MarlinSerial.cpp:142: first defined here
Marlin_RUMBA_i3v_GLCDPercent\MarlinSerial.cpp.o: In function `MarlinSerial::printNumber(unsigned long, unsigned char)':
C:\Users\DADS\Documents\Arduino\libraries\Marlin_RUMBA_i3v_GLCDPercent/MarlinSerial.cpp:261: multiple definition of `MarlinSerial::printNumber(unsigned long, unsigned char)'
MarlinSerial.cpp.o:C:\Users\DADS\AppData\Local\Temp\build5969387326602413889.tmp/MarlinSerial.cpp:261: first defined here
Marlin_RUMBA_i3v_GLCDPercent\MarlinSerial.cpp.o: In function `MarlinSerial::print(long, int)':
C:\Users\DADS\Documents\Arduino\libraries\Marlin_RUMBA_i3v_GLCDPercent/MarlinSerial.cpp:173: multiple definition of `MarlinSerial::print(long, int)'
MarlinSerial.cpp.o:C:\Users\DADS\AppData\Local\Temp\build5969387326602413889.tmp/MarlinSerial.cpp:173: first defined here
Marlin_RUMBA_i3v_GLCDPercent\MarlinSerial.cpp.o: In function `MarlinSerial::print(unsigned long, int)':
/ultralcd_st7920_u8glib_rrd.h:43: multiple definition of `u8g_dev_rrd_st7920_128x64_fn(_u8g_t*, _u8g_dev_t*, unsigned char, void*)'
ultralcd.cpp.o:/ultralcd_st7920_u8glib_rrd.h:43: first defined here
Marlin_RUMBA_i3v_GLCDPercent\ultralcd.cpp.o.bss.u8g_dev_st7920_128x64_rrd_buf+0x0): multiple definition of `u8g_dev_st7920_128x64_rrd_buf'
ultralcd.cpp.o.bss.u8g_dev_st7920_128x64_rrd_buf+0x0): first defined here
Marlin_RUMBA_i3v_GLCDPercent\ultralcd.cpp.o.data.u8g_dev_st7920_128x64_rrd_pb+0x0): multiple definition of `u8g_dev_st7920_128x64_rrd_pb'
ultralcd.cpp.o.data.u8g_dev_st7920_128x64_rrd_pb+0x0): first defined here