Responding to your comment reply to this:
Actually, it was as simple as changing lines 401 and 402.
Seems to work so far. It found the file at least.
I'm glad you were able to answer your own issue with the plugin. Unfortunately, since this is an edge case as you had said, I will not be integrating this into future versions of the plugin.
I'm going to be marking this topic as resolved, but if you need further assistance, feel free to open another.
Can you explain good justification for opening the file via url? If you're uploading a file and have the local handle, why go back out over http and open it that way? Especially considering it breaks in local installs or if you have http auth enabled (ie staging servers)
This is a bug, and a simple one at that to fix. Why no willingness to fix?
I was just about to fix and submit a patch to you, but your comment left a bad taste in my mouth. I hope you reconsider.