How much program code & romdata do you have!?
Look at the partial map file that was generated.
Code:
CODEPAGES:
Memory Start End Section Address Size(Bytes)
--------- --------- --------- --------- --------- ---------
page 0x0800 0xffff _entry_scn 0x0800 0x0006
InterruptVectorHigh 0x0808 0x0006
InterruptVectorLow 0x0818 0x0006
.cinit 0x081e 0x00b6
.romdata_drv_Interrupts.o 0x08d4 0x7700
Look for large sections of code/romdata in the size/bytes column. Essentially the linker says you are out of rom space for program instructions (since this is a .code section).
Not generating a map file? Project->Build options->Project, MPLINK Linker tab, check "Generate map file", Apply, OK, Project->Clean, Project->Build All.