WIKINDX will not function correctly if various folders and files are not writeable by the web server user. The following, shown with their current permissions, should be made writeable:

attachments:  0750
templates/default:  0750
templates/default/description.txt:  0640
templates/compiled_templates:  0750
templates/bryophyta:  0750
templates/bryophyta/description.txt:  0640
templates/IFE:  0750
templates/IFE/description.txt:  0640
templates/verticalOrange:  0750
templates/verticalOrange/description.txt:  0640
templates/simpleBlue:  0750
templates/simpleBlue/description.txt:  0640
templates/enluminure:  0750
templates/enluminure/description.txt:  0640
plugins/adminstyle:  0750
plugins/adminstyle/config.php:  0750
plugins/adminstyle/index.php:  0750
plugins/userwritecategory:  0750
plugins/userwritecategory/config.php:  0750
plugins/userwritecategory/index.php:  0750
plugins/importamazon:  0750
plugins/importamazon/config.php:  0750
plugins/importamazon/index.php:  0750
plugins/test:  0750
plugins/test/config.php:  0750
plugins/test/index.php~:  0750
plugins/chooseLanguage:  0750
plugins/chooseLanguage/config.php:  0750
plugins/chooseLanguage/index.php:  0750
plugins/wordProcessor:  0750
plugins/wordProcessor/config.php:  0750
plugins/wordProcessor/index.php:  0750
plugins/inline1:  0750
plugins/inline1/config.php:  0750
plugins/inline1/index.php~:  0750
plugins/importexportbib:  0750
plugins/importexportbib/config.php:  0750
plugins/importexportbib/index.php:  0750
plugins/localization:  0750
plugins/localization/config.php:  0750
plugins/localization/index.php~:  0750
styles/bibliography:  0750
styles/bibliography/chicago/CHICAGO.xml:  0640
styles/bibliography/wikindx/WIKINDX.xml:  0640
styles/bibliography/ieee/IEEE.xml:  0640
styles/bibliography/turabian/TURABIAN.xml:  0640
styles/bibliography/vste/VSTE.xml:  0640
styles/bibliography/mla/MLA.xml:  0640
styles/bibliography/copie-style-vst/COPIE-STYLE-VST.xml:  0640
styles/bibliography/britishmedicaljournal/BRITISHMEDICALJOURNAL.xml:  0640
styles/bibliography/harvard/HARVARD.xml:  0640
styles/bibliography/apa/APA.xml:  0640
styles/bibliography/vst/VST.xml:  0640
styles/CACHE:  0750
languages:  0750
languages/reference/ERRORS.php:  0640
languages/reference/CONSTANTS.php:  0640
languages/reference/MESSAGES.php:  0640
languages/reference/SUCCESS.php:  0640
languages/reference/HELP.php:  0640