WP-Piwik test script returns HTTP/1.1 307

I cannot get WP-Piwik to recognise Piwik, the test script returned:

[ Moderator note: please wrap code in backticks or use the code button. ]

<snip>
*** Test 1/2: SitesManager.getSitesWithAtLeastViewAccess ***
Using: cURL
SSL peer verification: enabled
User Agent:
Call: http://DOM/piwik/?module=API&method=SitesManager.getSitesWithAtLeastViewAccess&format=XML&token_auth= + TOKEN
Result:
HTTP/1.1 307
LOCATION: https://DOM/piwik/?module=API&method=SitesManager.getSitesWithAtLeastViewAccess&format=XML&token_auth=[token hidden]
Content-Length: 0

Time: 3.26s

*** Test 2/2: SitesManager.getSitesIdFromSiteUrl ***
Using: cURL
SSL peer verification: enabled
User Agent:
Call: http://DOM/piwik/?module=API&method=SitesManager.getSitesIdFromSiteUrl&url=http%3A%2F%2FDOM%2Fwordpress&format=XML&token_auth= + TOKEN
Result:
HTTP/1.1 307
LOCATION: https://DOM/piwik/?module=API&method=SitesManager.getSitesIdFromSiteUrl&url=http%3A%2F%2FDOM%2Fwordpress&format=XML&token_auth=[token hidden]
Content-Length: 0
</snip>

[token hidden] was in fact the correct token from my API. DOM is domain…

Why am i getting 307 redirect and not 200? I tried disabling ssl peer verification, no difference.

Thanks in advance,
Nico Morrison
London UK.

http://wordpress.org/plugins/wp-piwik/