unfortunately, it doesn't work with usb connections.
Actually, I have another idea. You said it never failed a calc-to-calc transfer. Well, get a calculator emulator
You can download VTi and use that. I had it for a while on my calc. Made transfers (and testing programs) very easy.
i've tried the tilp driver for windows. (the tilp driver for linux doesn't compile on my machine.) no change.
I guess the only thing I have to recommend is the fact that there are other transfer programs than the one provided by TI. I'm sure you already know that, but just in case, now you do