news highlighter now working on godaddy host

Hello,
When i install tabs manager and news highlighter on localhost everything works perfect. But when i install them on my host (Godaddy) they do not work, i can't add any slides on tab manager and i can't view any content i write...

i wanted to byu some templates from gavick especialy News II but if i can't use these (GK news, tab manager, etc) my site won't look as good as yuor in live demo

any help would be appriciated. thank you

i use the latest joomla version, the content is in greek language but the issue is tested on english content as well

I believe it has something to do with permissions but i am not sure what...

Ps= please excuse my english i am from Greece