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You should consider disabling magic_quotes_gpc. For more information See #25 of the Zenphoto troubleshooting guide.

Setting mbstring.internal_encoding to UTF-8 in your php.ini file is recommended to insure accented and multi-byte characters function properly.

When this option is not in effect, file and folder permissions are relaxed. This could constitute a security risk so it is recommended that you enable Strict Permissions. However, on some servers Zenphoto does not function correctly with strict file/folder permissions. If you enable this option and Zenphoto has permission errors, run setup again and disable the option.

You must be logged in to change this.

NOTE: This option applies only to new files and folders created by Zenphoto. You may have to change permissions on existing ones to resolve problems.

You should consider porting your data to UTF-8 and changing the collation of the database fields to utf8_unicode_ci

Perhaps there was a problem with the upload. You should check the following files:
.htaccess
License.txt
lighttpd_rules.conf
themes/default/images/50percent.png
themes/default/images/img-bg.gif
themes/default/images/tag.png
themes/default/slideshow-controls.png
themes/default/slideshow.css
themes/default/slideshow.php
themes/default/theme.png
themes/effervescence_plus/gallery.php
themes/effervescence_plus/images/25percent.png
themes/effervescence_plus/images/50percent.png
themes/effervescence_plus/images/50percentwhite.png
themes/effervescence_plus/images/arrow_right.png
themes/effervescence_plus/images/dark-bullet.png
themes/effervescence_plus/images/dark_arrow_right.png
themes/effervescence_plus/images/err-passwordprotected.gif
themes/effervescence_plus/images/imageDefault.png
themes/effervescence_plus/images/logo.png
themes/effervescence_plus/images/multimediaDefault.png
themes/effervescence_plus/images/search.png
themes/effervescence_plus/images/slimbox/closelabel.gif
themes/effervescence_plus/images/slimbox/loading.gif
themes/effervescence_plus/images/slimbox/nextlabel.gif
themes/effervescence_plus/images/slimbox/prevlabel.gif
themes/effervescence_plus/images/smooth/carrow1.gif
themes/effervescence_plus/images/smooth/carrow2.gif
themes/effervescence_plus/images/smooth/fleche1.gif
themes/effervescence_plus/images/smooth/fleche1.png
themes/effervescence_plus/images/smooth/fleche2.gif
themes/effervescence_plus/images/smooth/fleche2.png
themes/effervescence_plus/images/smooth/loading-bar-black.gif
themes/effervescence_plus/images/smooth/open.gif
themes/effervescence_plus/images/smooth/open.png
themes/effervescence_plus/images/zen-logo.jpg
themes/effervescence_plus/index.php
themes/effervescence_plus/jd.gallery.css
themes/effervescence_plus/scripts/bluranchors.js
themes/effervescence_plus/scripts/jd.gallery.js
themes/effervescence_plus/scripts/jd.gallery.set.js
themes/effervescence_plus/scripts/jd.gallery.transitions.js
themes/effervescence_plus/scripts/mootools.v1.11.js
themes/effervescence_plus/scripts/slimbox.js
themes/effervescence_plus/scripts/swfobject.js
themes/effervescence_plus/simpleviewer.swf
themes/effervescence_plus/slideshow-controls.png
themes/effervescence_plus/slideshow.css
themes/effervescence_plus/slimbox.css
themes/effervescence_plus/styles/blue and green play.css
themes/effervescence_plus/styles/free chocolates.css
themes/effervescence_plus/styles/kish-my father.css
themes/effervescence_plus/styles/machu picchu.css
themes/effervescence_plus/styles/see you again.css
themes/effervescence_plus/theme.jpg
themes/example/slideshow-controls-old.png
themes/example/slideshow-controls.png
themes/example/slideshow.css
themes/example/slideshow.php
themes/example/tag.png
themes/example/theme.png
themes/stopdesign/css/custom.css
themes/stopdesign/css/master.css
themes/stopdesign/images/50percent.png
themes/stopdesign/images/bg_gal.gif
themes/stopdesign/images/bg_gal.png
themes/stopdesign/images/bg_page.jpg
themes/stopdesign/images/bg_path.gif
themes/stopdesign/images/bg_shadow.png
themes/stopdesign/images/bg_slide.gif
themes/stopdesign/images/bg_slide.png
themes/stopdesign/images/bg_slide_sm.gif
themes/stopdesign/images/bg_slide_sm.png
themes/stopdesign/images/btn_add_a_comment.gif
themes/stopdesign/images/btn_all_favorites.gif
themes/stopdesign/images/btn_gallery_archive.gif
themes/stopdesign/images/btn_go.gif
themes/stopdesign/images/btn_hide.gif
themes/stopdesign/images/btn_preview.gif
themes/stopdesign/images/btn_rss.gif
themes/stopdesign/images/btn_save.gif
themes/stopdesign/images/btn_show.gif
themes/stopdesign/images/btn_submit.gif
themes/stopdesign/images/btn_view_gallery.gif
themes/stopdesign/images/bullet_white.gif
themes/stopdesign/images/canon_sd10.jpg
themes/stopdesign/images/divider_l.gif
themes/stopdesign/images/divider_l.png
themes/stopdesign/images/divider_r.gif
themes/stopdesign/images/divider_r.png
themes/stopdesign/images/err-passwordprotected.gif
themes/stopdesign/images/icon_pushpin.gif
themes/stopdesign/images/imageDefault.png
themes/stopdesign/images/moreslide_next.gif
themes/stopdesign/images/moreslide_prev.gif
themes/stopdesign/images/photonav_next.gif
themes/stopdesign/images/photonav_next.png
themes/stopdesign/images/photonav_prev.gif
themes/stopdesign/images/photonav_prev.png
themes/stopdesign/images/slide_minis.gif
themes/stopdesign/images/txt_backward.gif
themes/stopdesign/images/txt_forward.gif
themes/stopdesign/normalizer.php
themes/stopdesign/slideshow-controls.png
themes/stopdesign/slideshow.css
themes/stopdesign/slideshow.php
themes/stopdesign/theme.png
themes/zenpage-default/images/50percent.png
themes/zenpage-default/images/arrow_right.gif
themes/zenpage-default/images/body.jpg
themes/zenpage-default/images/footer.jpg
themes/zenpage-default/images/header.jpg
themes/zenpage-default/images/img-bg.gif
themes/zenpage-default/images/tag.png
themes/zenpage-default/index.php
themes/zenpage-default/slideshow-controls.png
themes/zenpage-default/slideshow.css
themes/zenpage-default/slideshow.php
themes/zenpage-default/theme.png
zp-core/plugins/tiny_mce/plugins/ajaxfilemanager/theme/default/images/New Folder/folder_explore.png
zp-core/plugins/tiny_mce/themes/zenphoto/editor_template Kopie.js
zp-core/template-functions.php