I'm trying to install the Jumi extension in my Joomla 1.5.22 installation. I've downloaded the zip from Jumis homepage, , and followed [this](http://edo.webmaster.am/jumi/installation-in-j1.5) guide, but it gives me this error:

```
JFolder::create: Could not create directory
Warning! Failed to move file.

```

Under Help->System info->Directory Permissions all directories have "writable" in green except .../logs and .../tmp. I've checked in my ftp client and they both have access rights 777 (what should they really have?) so they should be writable but they are still marked Unwritable.

How do I make them writable?