Let me paint the picture first.I've created a site on a subdomain of an online website.
The online website was running on joomla 1.0, the new one runs on joomla 2.5.
When I wanted to transfer the site from the subdomain to the main site I noticed that transferring a site from one place to the other is harder than it sounds.
I've backed up my new joomla 2.5 site with 'x-cloner backup and restore' and it provides you with a backup dat you can download.
I didn't know how to manually removing the online site from the FTP without [censored] everything up so I figured I will install joomla 2.5 via my hosting company that they provide and the new joomla will overrite the old one. And that worked.
I Installed 'x-cloner backup and restore' extension and tried to import and extract the backup.
The installation of the x-cloner went just fine however the program worked a bit differently than i expected. (I wasn't able to import the mysql stuff via the functions that x-cloner provides)
I do not know how to write code etc so yes I'm a noob at this (For e.g. I tapped myself on the shoulder when I was able to figure out how to fix the verification html method from google webtools

). However, I figured if I facilitate the now clean joomla 2.5 with the same template and modules, I'll just extract the backup on my laptop and replace the original files on the FTP server. And that worked! I had a working site and it was online! But I was suspicious of authorization things that could go wrong...
Actual problemAnd now when I want to install other extensions it gives the following error:
'JFolder::create: Could not create directory
Warning: Failed to move file!'
I think this has to do with administrative permissions. And I searched for solutions, which I think is in here;
http://docs.joomla.org/Copying_a_Joomla_website(search for 'extensions' and its at the first hit)
It gives a viable solution to my problem however it explains how to do it in Joomla 1.5 and not in 2.5. I've searched through all the permissions but I couldn't find the cache, log and temp directory so I wasn't able to check whether they are writeable or not.
I hope that somebody can help me fixing this problem, its a bit of a story but thanks in advance!