error show category list on my site

[nkyee]

i found error show category list on my site when i use multi vendor extension to add products
implode() [function.implode]: Invalid arguments passed in /home/qlee/domains/qs.com.my/public_html/redantz/administrator/components/com_virtuemart/helpers/shopfunctions.php on line 561

[nkyee]

i update to version 3.0.8.. if use 2.1.16 no problem