OpenRefine 2.5/2.6 + CKAN 2.3a = JSONException with CKAN 2.3a

[florianm]

Hi,
first of all thanks for creating this extension! I've just installed it into OpenRefine 2.6 beta for Linux, trying to upload a dataset to my CKAN 2.3a instance. I've changed the CKAN url to my own instance, kept the /api/rest/package path, pasted an existing dataset id and my API key, and ran into:

org.json.JSONException: A JSONObject text must begin with '{' at 1 [character 2 line 1]
        at org.json.JSONTokener.syntaxError(JSONTokener.java:423)
        at org.json.JSONObject.<init>(JSONObject.java:184)
        at org.json.JSONObject.<init>(JSONObject.java:311)
        at org.deri.orefine.ckan.StorageApiProxy.uploadFile(StorageApiProxy.java:40)

Looks more like a string conversion issue than some breaking API changes - will need to read through the code to see whether I can narrow it down further. Getting the same exception with google refine 2.5.