Error reading data on Windows when joining an invite

[Teteros]

My Windows nodes are getting this error at the end of join command, at least when the invite came from a Linux tinc node:

Invitation successfully accepted.

Error reading data from IP port 665: File exists

printed at the very end.

Not sure if this also happens windows to windows as well.

Error aside, invite works as expected. However it means tinc exits with a non-zero error level (and all its output is on stderr) which makes checking for success in scripts harder.

Tinc version: 1.1pre16