To resolve this:
in the root of the website create a directory "ioncube"
place the loader file there.
then in your php.ini file, add the line:
zend_extension_ts = "path to website/ioncube/loaderfilename.dll"
make sure that you only have ONE zend_extension_ts entry in the php.ini file.
then restart your webserver.
your component should then be accessible.
Thank you ! I will try soon.
In fact this error it happens only on localhost ! On the production server, the installation it was without errors !