I can't get v0.5 to work as well.
Same problem as v0.4
I am not getting any data on the page.
Dropdown menu etc works but no extremes data.
Followed set up instructions.
These scripts all have to be in the same folder?
Do I need to create a cache folder or something for the cache.php files.
I noticed when running the script, i can see the time (on my ftp program) when was written to extremesCache_eur.php got updated.
But filesize remains 0 kb and no data shown on the page.