Write permissions on files and folders error with /sitemap.xml

[Guest]

Hi
I have tried several times now uploading to home page.
When the installation runs it wont go further than second page (system compatibility)
and one of the files /sitemap.xml it says does not Write permissions on files and folders
I have changed the write protection etc in a FTP and tried uploading directly to the control panel
but it wont change on the instalation page?
any ideas, simple english as am not very proficient!

[Guest]

Ok after a very long afternoon I have figured it out, it seems quite a few other people have had the same problem with the sitemap.xml error on the 2nd part of the instalation page, it is misleading because it says it is a write permission error when in fact it is because a load of files are missing.

If you are loading the site via a FTP to your host and the shop is to be your homepage ie www.yourdomain.com you open the prestashop folder to upload the files and folders init so that you dont end up with it in a subdomain i.e www.yourdomain.com/prestashop however this is where the problem lies, it is easy to miss within the prestashop file aswell as the folders is about 16 small php files which dont seem to show initialy in the FTP program (I was using filezilla)

After a whole afternoon going nuts messing round with the xml file in the install folder which has nothing to do with the error, I just copyied the missing php files into anouther folder on my desk top and then found the files in that folder with my FTP and uploaded them to the server where they should be with the under the folders with on the first page.