Aperture does not open

Aperture is giving me the following error when it try to open:

Dyld Error Message:

Library not loaded: /Library/Frameworks/PluginManager.framework/Versions/B/PluginManager

Referenced from: /Applications/Aperture.app/Contents/MacOS/Aperture

Reason: no suitable image found. Did find:

/Library/Frameworks/PluginManager.framework/Versions/B/PluginManager: no matching architecture in universal wrapper

Any idea on how to fix it?