I'm trying to install this software on apache linux

It keeps saying some directories have no writing permissions even though they do. Just for testing sake, I chmod'ed everything to 777

^{[alexia@linux html]$ ls -l
total 120
-rwxrwxrwx. 1 apache apache 55022 Jan  3 12:25 CHANGELOG.txt
-rwxrwxrwx. 1 apache apache  1398 Jan  3 12:18 config-sample.php
-rwxrwxrwx. 1 apache apache 15086 Jan  3 12:18 favicon.ico
-rwxrwxrwx. 1 apache apache  5088 Jan  3 12:18 index.php
-rwxrwxrwx. 1 apache apache 11358 Jan  3 12:18 LICENSE-2.0.txt
drwxrwxrwx. 8 apache apache  4096 Nov 25 07:44 oc-admin
drwxrwxrwx. 7 apache apache   101 Jan  3 12:19 oc-content
drwxrwxrwx. 5 apache apache   115 Nov 25 08:42 oc-includes
-rwxrwxrwx. 1 apache apache 13326 Jan  3 12:18 oc-load.php
-rwxrwxrwx. 1 apache apache   273 Jan  3 12:18 robots.txt
[alexia@linux html]$}

Installation shows a cross on the following and won't let me proceed:
X oc-content/downloads folder is writable
X oc-content/languages folder is writable
X Root directory is writable

There is set of functions involved, I think osclass does not check permissions, but simply if php function can write in these directories or not.

Anyway you may PM ftp login and we will review if functions used there works as expected.

Having all the permission to 777 is a big mistake and a security risk. Osclass need folders permissions set to 755 and files permissions set to 644