Hi,
Bloom and glare can take some time to compute, especially at high resolutions. So if you hit save while bloom and glare is still calculating it can seem like Max has frozen. In my tests after some time, Max will recover and the file will be saved out correctly.
A good workaround for this is to save the file as a cxr with bloom and glare disabled, then load the cxr into Corona Image Editor and apply bloom and glare there.
It's interesting that this only happens on one of your machines, can you tell me the specifications of your computers?
Thanks,
Rowan