Website archive

[darkside]

Hi, when i try to create backup of the website, the message appears:
Error: ZipArchive extension is not installed. Unable to continue - Website Health Check

The result of the website health check is:

GetSimple Version
GetSimple Version 3.0 - Latest version installed
Server Setup
PHP Version 5.3.6-13 - OK
cURL Module Installed - OK
GD Library Installed - OK
ZipArchive Installed - OK
SimpleXML Module Installed - OK
Apache Mod Rewrite Not Installed - Warning

For more information on the required modules, visit the requirements page.
Data File Integrity Check
/data/pages/energy.xml XML Valid - OK
/data/pages/food.xml XML Valid - OK
/data/pages/index.xml XML Valid - OK
/data/pages/wc.xml XML Valid - OK
/data/other/404.xml XML Valid - OK
/data/other/authorization.xml XML Valid - OK
/data/other/components.xml XML Invalid - Error!
/data/other/plugins.xml XML Valid - OK
/data/other/website.xml XML Valid - OK
/backups/other/components.xml.bak XML Valid - OK
/backups/other/website.xml.bak XML Valid - OK
/backups/users/alexander.xml.bak XML Valid - OK
/backups/pages/wc.bak.xml XML Valid - OK
Directory Permissions
/data/pages/ 0755 Writable - OK
/data/other/ 0755 Writable - OK
/data/other/logs/ 0755 Writable - OK
/data/thumbs/ 0755 Writable - OK
/data/uploads/ 0755 Writable - OK
/data/users/ 0755 Writable - OK
/backups/zip/ 0755 Writable - OK
/backups/pages/ 0755 Writable - OK
/backups/other/ 0755 Writable - OK
/backups/users/ 0755 Writable - OK
.htaccess Existance
/data/ Good 'Deny' file - OK
/data/uploads/ Good 'Allow' file - OK
/data/thumbs/ Good 'Allow' file - OK
/data/pages/ Good 'Deny' file - OK
/plugins/ Good 'Deny' file - OK
/data/other/ Good 'Deny' file - OK
/data/other/logs/ Good 'Deny' file - OK
/theme/ No file - OK

Website backup worked once before, but not anymore..
Any idea?

Thanks in advance!