I use aperture 3 since a long time. Using slit viewer, now the bigger image become bigger then the given space and shifted to the right, so that I can't see the complete picture anymore. And I also don't see the last few picture in the strip below. How ca

This lloks like your preferences file might have become corrupted.

you probably have a problem with corrupted user preferences.

Remove the Preferences: Remove the Aperture's user preferences from the User Library as described here:
Aperture 3: Troubleshooting Basics http://support.apple.com/kb/HT3805

Note:Your User Library is hidden by default in 10.7.x or later - to open it in a Finder window use the "Go" menu from the Finder's main menu bar.

• Quit Aperture, if it is running. Log off and on again.
• Open the user library by using the Finder's "Go > Go to Folder" menu and hold down the options-key, until "Library" appears in the drop down menu. Select it.
• In the widow that will open, scroll down to "Preferences"
• From the "Preferences" folder remove "com.apple.Aperture.plist".

Then try to launch Aperture again.

But deleting the "Preferences" file will cause Aperture to forget the preferences settings. Be prepared to have to reset all options you set using the Aperture Preferences panel.

Regards

Léonie

Prego! 🙂

Léonie