help everytime i try to install lion i get this

[do2423]

Last login: Wed Feb 22 11:04:17 on ttys000
/Volumes/Mac\ OS\ X\ Install\ ESD/Install\ Mac\ OS\ X\ Lion.app/Contents/MacOS/Install\ Mac\ OS\ X\ Lion ; exit;
david:~ david$ /Volumes/Mac\ OS\ X\ Install\ ESD/Install\ Mac\ OS\ X\ Lion.app/Contents/MacOS/Install\ Mac\ OS\ X\ Lion ; exit;
2012-02-22 11:17:01.021 Install Mac OS X Lion[14942:903] Error loading /Volumes/Mac OS X Install ESD/Install Mac OS X Lion.app/Contents/PlugIns/IACoreStorage.IABundle/Contents/MacOS/IACoreStorage: dlopen(/Volumes/Mac OS X Install ESD/Install Mac OS X Lion.app/Contents/PlugIns/IACoreStorage.IABundle/Contents/MacOS/IACoreStorage, 265): Library not loaded: /usr/lib/libcsfde.dylib
Referenced from: /Volumes/Mac OS X Install ESD/Install Mac OS X Lion.app/Contents/PlugIns/IACoreStorage.IABundle/Contents/MacOS/IACoreStorage
Reason: image not found

 

[do2423]

help please

 

[iPinas]

Corrupt installer perhaps...

 

[do2423]

thank you for the help