[MonoTouch] Monodevelop error: ibtool exited with code 133

[digigate]

I created a new Ipad Masterd-detail application.
When I building my application ,It shows a error,


XCode version is: 3.2.5
Monodevelop:2.8  and Monotouch version already upgrated to lasted version.

Please tell me ,How resolve this problem ? 
My Email: digigate at 163.com


Thanks very much !



Error information as below:


Building: test006 (Debug|iPhoneSimulator)

Building Solution test006

Building: test006 (Debug|iPhoneSimulator)

Performing main compilation...
/Developer/MonoTouch/usr/bin/smcs /noconfig
"/out:/Users/admin/Projects/test006/test006/bin/iPhoneSimulator/Debug/test006.exe"
"/r:/Developer/MonoTouch/usr/lib/mono/2.1/System.dll"
"/r:/Developer/MonoTouch/usr/lib/mono/2.1/System.Xml.dll"
"/r:/Developer/MonoTouch/usr/lib/mono/2.1/System.Core.dll"
"/r:/Developer/MonoTouch/usr/lib/mono/2.1/monotouch.dll" /nologo /warn:4
/debug:+ /debug:full /optimize- /codepage:utf8 "/define:DEBUG"  /t:exe
"/Users/admin/Projects/test006/test006/Main.cs"
"/Users/admin/Projects/test006/test006/AppDelegate.cs"
"/Users/admin/Projects/test006/test006/RootViewController.cs"
"/Users/admin/Projects/test006/test006/RootViewController.designer.cs"
"/Users/admin/Projects/test006/test006/DetailViewController.cs"
"/Users/admin/Projects/test006/test006/DetailViewController.designer.cs" 
Compilation succeeded - 1 warning(s)

/Users/admin/Projects/test006/test006/RootViewController.cs(53,44): warning
CS0414: The private field `test006.RootViewController.DataSource.controller'
is assigned but its value is never used



Compiling interface definitions
/Developer/usr/bin/ibtool --errors --warnings --notices --output-format
human-readable-text
"/Users/admin/Projects/test006/test006/RootViewController.xib" --compile
"/Users/admin/Projects/test006/test006/bin/iPhoneSimulator/Debug/test006.app/RootViewController.nib"
--sdk
"/Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator4.3.sdk"
dyld: Library not loaded:
@rpath/IDEInterfaceBuilderKit.ideplugin/Contents/MacOS/IDEInterfaceBuilderKit
  Referenced from: /Developer/usr/bin/ibtoold
  Reason: image not found
ibtool exited with code 133
Build complete -- 1 error, 1 warning

---------------------- Done ----------------------

Build: 1 error, 1 warning

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