this is what I get building niecza

gistfile1.txt

niecza$ xbuild
XBuild Engine Version 2.6.7.0
Mono, Version 2.6.7.0
Copyright (C) Marek Sieradzki 2005-2008, Novell 2008-2009.

Build started 1/10/2011 12:55:48 AM.
__________________________________________________
Project "/home/masak/git-theirs/niecza/Niecza.proj" (default target(s)):

	Target Grammar:
	Skipping target "Grammar" because its outputs are up-to-date.

	Target PerlTask:
	Skipping target "PerlTask" because its outputs are up-to-date.

	Target SAFE.nam:

	Target CORE.nam:

	Target Kernel.dll:
		Tool /usr/bin/gmcs execution started with arguments:  /debug+ /out:obj/Kernel.dll /home/masak/git-theirs/niecza/lib/Builtins.cs /home/masak/git-theirs/niecza/lib/CLRBackend.cs /home/masak/git-theirs/niecza/lib/Cursor.cs /home/masak/git-theirs/niecza/lib/JSYNC.cs /home/masak/git-theirs/niecza/lib/Kernel.cs /home/masak/git-theirs/niecza/lib/NieczaCLR.cs /target:library /unsafe+
: error CS0040: Unexpected debug information initialization error `The assembly for default symbol writer cannot be loaded'
	Task "Csc" execution -- FAILED
	Done building target "Kernel.dll" in project "/home/masak/git-theirs/niecza/Niecza.proj".-- FAILED

Done building project "/home/masak/git-theirs/niecza/Niecza.proj".-- FAILED

Build FAILED.
Errors:

/home/masak/git-theirs/niecza/Niecza.proj (default targets) ->
(Kernel.dll target) ->

	: error CS0040: Unexpected debug information initialization error `The assembly for default symbol writer cannot be loaded'

	 0 Warning(s)
	 1 Error(s)

Time Elapsed 00:00:12.2635430