nqp error

(kadath)(~/git/plumage master )$ /Users/leto/git/nqp-rx/parrot_install/bin/nqp Configure.nqp
Hello, I'm Configure. My job is to poke and prod
your system to figure out how to build Plumage.

Configure completed for platform 'darwin'.
You can now type 'gmake' to build Plumage.

You may also type 'gmake test' to run the Plumage test suite.

Happy Hacking,
	The Plumage Team
(kadath)(~/git/plumage master )$ gmake
/Users/leto/git/nqp-rx/parrot_install/bin/parrot -o src/lib/Glue.pbc src/lib/Glue.pir
/Users/leto/git/nqp-rx/parrot_install/bin/parrot-nqp --target=pir -o src/lib/Util.pir src/lib/Util.nqp
Cannot take substr outside string
current instr.: 'parrot;NQP;Grammar;ws' pc 2800 (src/stage0/NQP-s0.pir:869)
called from Sub 'parrot;NQP;Grammar;statementlist' pc 6340 (src/stage0/NQP-s0.pir:1844)
called from Sub 'parrot;NQP;Grammar;comp_unit' pc 6031 (src/stage0/NQP-s0.pir:16)
called from Sub 'parrot;NQP;Grammar;TOP' pc 970 (src/stage0/NQP-s0.pir:370)
called from Sub 'parrot;Regex;Cursor;parse' pc 282 (src/Regex/Cursor.pir:161)
called from Sub 'parrot;HLL;Compiler;parse' pc 24 (src/cheats/hll-compiler.pir:14)
called from Sub 'parrot;PCT;HLLCompiler;compile' pc 388 (src/PCT/HLLCompiler.pir:287)
called from Sub 'parrot;PCT;HLLCompiler;eval' pc 944 (src/PCT/HLLCompiler.pir:537)
called from Sub 'parrot;PCT;HLLCompiler;evalfiles' pc 1255 (src/PCT/HLLCompiler.pir:688)
called from Sub 'parrot;PCT;HLLCompiler;command_line' pc 1441 (src/PCT/HLLCompiler.pir:775)
called from Sub 'parrot;NQP;Compiler;main' pc -1 ((unknown file):-1)
gmake: *** [src/lib/Util.pir] Error 1
(kadath)(~/git/plumage master )$ /Users/leto/git/nqp-rx/parrot_install/bin/nqp --version
This compiler is built with the Parrot Compiler Toolkit, parrot revision 42791.