I seem to remember that TI Connect on Windows ditched support for "legacy" calcs like the 86 even back when it first came out, though I could be remembering that wrong. But yeah, if you (@Switchblade) could answer DJ Omnimaga's questions, and also tell us which linking software and cable you're using, that might provide a clue. Also, you might try using TILP to transfer the files to the calculator if you haven't already; I seem to recall that there were a few strangely-formatted 86 files out there that can confuse some link programs into transferring bad data. As I recall, TILP can properly handle several of the nonstandard variations.