Same thing to me when I downloaded LimeWire 2.2.4 Pro upgrade @ 4.6Mgs

I'm pretty sure -39 means that it is an "incomplete" file.
Checked the installer with 'Get Info' and sure enough the file was only 3.x Mg.
Downloaded it a second time, (this time with Explorer /Download Manager) and got all 4.6Mgs
(I already have LimeWire 1.7 & 2.1.3 so the upgrade download is good enough).

One other thing, when I tried to use the second (4.6Mg) installer it 'hung up' before finishing the job,
however, a second launch of the installer proceeded just fine with no problems to-date.