No windows asset file found after deploy to Github release success

[BanzaiMan]

There was a similar issue recently, which I suppose is the root cause here:

SOLVED: Windows release deploy artifact missing in github after (apparent) successful windows job

My initial guess is that on Windows, $TRAVIS_BUILD_DIR is not properly resolved by Ruby. So there is no file to upload. If you are certain that you are in $TRAVIS_BUILD_DIR during the deployment, perhaps dropping it from the file value would result in successful upload.