Error uploading with CURL in DAV protocol

Hi,

I'm trying to do a DAV upload as I used to with CURL, and it is failing with the error log below. It seems fine until the 500 error.

Can I count on the ol' DAV protocol or has been disabled?

Thanks.

Cheers,

J.

Trying 107.152.25.197...
* TCP_NODELAY set
* Connected to dav.box.com (107.152.25.197) port 443 (#0)
* TLS 1.2 connection using TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384
* Server certificate: *.box.com
* Server certificate: GeoTrust SSL CA - G4
* Server certificate: GeoTrust Global CA
* Server auth using Basic with user 'xxxxxxx'
> PUT xxxxxxxxxxxx HTTP/1.1
> Host: dav.box.com
> Authorization: Basic xxxxxxxx
> User-Agent: curl/7.51.0
> Accept: */*
> Content-Length: 32
> Expect: 100-continue
>
* Done waiting for 100-continue
* We are completely uploaded and fine
< HTTP/1.1 100 Continue
< Date: Tue, 03 Jan 20**removed**:52:39 GMT
< Server: ATS
< HTTP/1.1 500 Internal Server Error
< Date: Tue, 03 Jan 20**removed**:52:38 GMT
< Content-Type: text/html; charset=UTF-8
< Content-Length: 0
< Age: 3
< Server: ATS
< Connection: keep-alive
<
* Curl_http_done: called premature == 0
* Connection #0 to host dav.box.com left intact