Hi DJ, > Ok. Thanks. > What happened when the bug tripped? ld.exe: BFD (GNU Binutils) 2.23.51.20121214 assert ion fail /home/kpit/fsfsrc/elf-v13.01-src-rl78/binutils-2.23-20121219/bfd/elf32- rl78.c:1311 This is from issue 3732153 if that helps. Cheers Nick