Put app with file option results in 500 errors and non-working app; using phonegap ui does work...

Hey all,

does this rest implementation still work? I have had several app builds with missing files when using the api rest client. When I use the PhoneGap "Update code" everything seems to work;
i've seen stack overflow posts mentioning the fact that everything should be multipart encoded when submitting to the service or else the file upload will fail or corrupt; is that correct?
