Error when installing cjforum 3.2.3

The installation script will try to create all folders and the file system will ignore it when already exist. But when the script cannot get write access to the folder, this error will occur. Make sure your folders have proper write permissions (755 on linux for folders). Otherwise the script cannot copy the files and the component may not work properly.

Hi

Write permission are OK (755) for all folders.

And it seems to be working OK, all files are there as far as I know.