thank you... but, that file does NOT disappear once download is finished (in fact, i have gone through the download/install process several times and it ALWAYS remains - see image in previous post), and, i am still left without a solution.
the real problem is the .dmg file doesn't mount as it is not recognized, and, i cannot control that file as IT is the file that downloads when the link is activated.
what is VERY interesting, is: the .part file is 1.19GB, while the .dmg file is 'zero bytes'... there must be a bug in the download script? even if i change the name by dropping the .part off the end, it still doesn't recognize the .dmg file.