Geshi library 1.1.x not recognised

Hi,

As per the read me file I downloaded this module uploaded it and then uploaded the geshi library.

However I get this error message: "GeSHi library error: Could not find a known version of the GeSHi library at sites/all/modules/geshifilter/geshi."

I know this means that the module can't find the version of geshi I uploaded but I can't understand why not. The default path it lists, "sites/all/modules/geshifilter/geshi" exists as I can browse to it via ftp, so why can't drupal find it?

The other thing that's weird is the help text under the path setting; "Specify the path to the GeSHi library directory (which contains a file called geshi.php)." In the version of geshi I downloaded I can't see that file anywhere in the archive.

I should mention that I have (somehow) installed this module on another site, but have unfortunately deleted it since then, so can't see what I did before!

I probably haven't explained this very well so here are some screenshots which I hope are more helpful!

1) The module's directory (located: /sites/all/modules/);

http://skitch.com/fenfe1/b3rfm/module-listing

2) The genSHi folder within that folder;

http://skitch.com/fenfe1/b3rfj/geshi-folder

3) For reference this is what I see when I download the latest version of geshi.

http://skitch.com/fenfe1/b3rf6/geshi-download-folder

If anyone has any ideas what I need to do to fix this it would be greatly appreciated, and if anyone needs any extra info just ask.

Thanks, Felix.