Question a present c est avec un module virtuemart impossible a installer

bonsoir
j essaye d installer

mod_virtuemart
il m indique ceci
* Installateur Module Succès


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Warning: zip_entry_read() [function.zip-entry-read]: The bytes parameter must greater then zero in /homez.136/talonaig/www/libraries/joomla/filesystem/archive/zip.php on line 238

Warning: zip_entry_read() [function.zip-entry-read]: The bytes parameter must greater then zero in /homez.136/talonaig/www/libraries/joomla/filesystem/archive/zip.php on line 238

Warning: zip_entry_read() [function.zip-entry-read]: The bytes parameter must greater then zero in /homez.136/talonaig/www/libraries/joomla/filesystem/archive/zip.php on line 238

Warning: zip_entry_read() [function.zip-entry-read]: The bytes parameter must greater then zero in /homez.136/talonaig/www/libraries/joomla/filesystem/archive/zip.php on line 238

Warning: zip_entry_read() [function.zip-entry-read]: The bytes parameter must greater then zero in /homez.136/talonaig/www/libraries/joomla/filesystem/archive/zip.php on line 238
Shows VirtueMart categories, the shopping cart, a product search field, an administration link, an account maintenance link and a link to the download page.

qui peux m aider merci