Error: Compile filter argument specified non-existent file: C:\tfs2\BRT\trunk\mobile\t2\release\MSIL\iconengines\qsvgicon.dll
Invalid argument

Microsoft (R) MDIL XAP Compiler - Version 4.0.0.0
Copyright (c) Microsoft Corporation.  All rights reserved.

Usage: MDILXAPCompile /In:<InputPath> /Out:<OutputPath> /Config:<ConfigPath> [/CompileFilter:<Assembly Path>;<Assembly Path>] [/Timeout:<Timeout>] [/Log:<LogPath>] [/AppX]

/In		- Path to directory containing files to process
/Out		- Path to directory to place processed files in
/Config		- Path to configuration file
/CompileFilter	- Optional restrictive list of assembly files in InputPath,
		  separated by semi-colons, to be compiled.
/Timeout	- Optional timeout in milliseconds before killing the Crossgen process. Overrides config file timeout value. Use -1 for infinite timeout, 0 for application default (2 hours).
/Log		- Optional path to log file
/AppX		- Specifies that assemblies correspond to an AppX package

Relative paths are relative to this executable's directory.