Mega2560 Error: ...relocation truncated to fit: R_AVR_13_PCREL ...

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Paul_Tonkes:
I have the Same problem. It occurs if I make some innocent modifications in my code, for example if I replace some text like...

prog_char PROGMEM Cmd_073[]="HTTPServerPort";

..in..

prog_char PROGMEM Cmd_073[]="PortInput";

The following error occures:

c:/program files (x86)/arduino-1.0.1/hardware/tools/avr/bin/../lib/gcc/avr/4.3.2/../../../../avr/lib/avr6/crtm2560.o: In function __vector_default': (.vectors+0x7c): relocation truncated to fit: R_AVR_13_PCREL against symbol __vector_31' defined in .text section in c:/program files (x86)/arduino-1.0.1/hardware/tools/avr/bin/../lib/gcc/avr/4.3.2/../../../../avr/lib/avr6/crtm2560.o

My code is only 77Kbyte.
Arduino version=1.0.1, Windows-7, Board=ATMega2560

This was similar to the problem/solution I found. Once I located the offending line, I changed the length of the string and it compiled. (note: I hate this type of fix!)