printer got crazy

hello, i made some changes on my prusa i3 throw the merlin (change the x direction) and the the printer start beeping and the screen stoped working.
if someone know how to fix it i will appreciate the help.



sketch\Marlin_main.cpp:2108:36: warning: invalid suffix on literal; C++11 requires a space between literal and identifier [-Wliteral-suffix]

LCD_MESSAGEPGM(MACHINE_NAME" "MSG_OFF".");