XF 2.2 [E_WARNING] curl_setopt_array(): Unable to create temporary file

Hi,

We're testing Xenforo 2.2 RC2, and we're getting this error on the admin, and other similar errors.
I know this looks like a permissions problem, but i'm absolutely sure that the permissions for the php temp folder are set correctly, as other applications use it. cURL also works from other applications.

Code:
ErrorException: [E_WARNING] curl_setopt_array(): Unable to create temporary file. in src\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php at line 56
XF::handlePhpError()
curl_setopt_array() in src\vendor\guzzlehttp\guzzle\src\Handler\CurlFactory.php at line 56
GuzzleHttp\Handler\CurlFactory->create() in src\vendor\guzzlehttp\guzzle\src\Handler\CurlHandler.php at line 39
GuzzleHttp\Handler\CurlHandler->__invoke() in src\vendor\guzzlehttp\guzzle\src\Handler\Proxy.php at line 28
GuzzleHttp\Handler\Proxy::GuzzleHttp\Handler\{closure}() in src\vendor\guzzlehttp\guzzle\src\Handler\Proxy.php at line 51
GuzzleHttp\Handler\Proxy::GuzzleHttp\Handler\{closure}() in src\vendor\guzzlehttp\guzzle\src\PrepareBodyMiddleware.php at line 66
GuzzleHttp\PrepareBodyMiddleware->__invoke() in src\vendor\guzzlehttp\guzzle\src\Middleware.php at line 30
GuzzleHttp\Middleware::GuzzleHttp\{closure}() in src\vendor\guzzlehttp\guzzle\src\RedirectMiddleware.php at line 70
GuzzleHttp\RedirectMiddleware->__invoke() in src\vendor\guzzlehttp\guzzle\src\Middleware.php at line 58
GuzzleHttp\Middleware::GuzzleHttp\{closure}() in src\vendor\guzzlehttp\guzzle\src\HandlerStack.php at line 67
GuzzleHttp\HandlerStack->__invoke() in src\vendor\guzzlehttp\guzzle\src\Client.php at line 277
GuzzleHttp\Client->transfer() in src\vendor\guzzlehttp\guzzle\src\Client.php at line 125
GuzzleHttp\Client->requestAsync() in src\vendor\guzzlehttp\guzzle\src\Client.php at line 131
GuzzleHttp\Client->request() in src\vendor\guzzlehttp\guzzle\src\Client.php at line 89
GuzzleHttp\Client->__call() in src\XF\Service\Upgrade\Checker.php at line 73
XF\Service\Upgrade\Checker->check() in src\XF\Admin\Controller\Tools.php at line 408
XF\Admin\Controller\Tools->actionUpgradeCheck() in src\XF\Mvc\Dispatcher.php at line 350
XF\Mvc\Dispatcher->dispatchClass() in src\XF\Mvc\Dispatcher.php at line 257
XF\Mvc\Dispatcher->dispatchFromMatch() in src\XF\Mvc\Dispatcher.php at line 113
XF\Mvc\Dispatcher->dispatchLoop() in src\XF\Mvc\Dispatcher.php at line 55
XF\Mvc\Dispatcher->run() in src\XF\App.php at line 2300
XF\App->run() in src\XF.php at line 464
XF::runApp() in admin.php at line 13

Thanks
Alex
 
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