My pictures on my iphone are automatically uploading to dropbox, but my videos aren't even though I have "upload videos" turned on. I've successfully uploaded smaller videos about 2 min 15 sec, but when I try to upload a 3.5 min video, it tells me "Can't upload file. There was a problem uploading [file name]. Please try again." I'm connected to wifi. Is there any other way for me to get it from my phone to dropbox on my computer?