Sometimes Error code 104 cause problems for AOL desktop gold users. It because the problem in many ways like you won’t be able to install AOL desktop gold, freezes screen, shut the running program etc.
This main reason behind this problem is that you have a corrupt HDD and some damaged file in your HDD or the improper installation of AOL desktop.
So, this problem is not that big, you can use an Anti-virus to remove any virus or malware and all those damaged files.
Try download AOL desktop gold again in a proper way and restart the computer.