---- EDIT ----
just tested on my dev system with "local" DB and am having the same errors.
i use nusphere phpED with its installed php 5.2, and still crapping out with the category.php
Hi,

Have my site running on my test server at home, no problems. I uploaded it to godaddy and on a page that displays images of some projects , on godaddy I receive

Warning: array_unique() [function.array-unique]: The argument should be an array in /home/content/84/9252384/html/templates/theme930/html/com_k2/templates/portfolio/category.php on line 30

Warning: Invalid argument supplied for foreach() in /home/content/84/9252384/html/templates/theme930/html/com_k2/templates/portfolio/category.php on line 38

Warning: implode() [function.implode]: Invalid arguments passed in /home/content/84/9252384/html/templates/theme930/html/com_k2/templates/portfolio/category.php on line 243

The site on godaddy was running pho 5.3, but I downgraded to 5.2

Not sure if this is a database error or site issue,
Any help/insight appreciated

Johnny