I had problems using the SOS installer for Win 10 64-bit. Running the .exe installer file opened multiple instances of the installer, this led to the installer requesting to automatically close down the other instances of the installer. It did not appear to do his successfully and reported a few errors as it progressed with trying to install this software. I asked for a link to be put on the desktop, when I clicked on it the installer process was started again. I removed the software with Revo Uninstaller and tried installing Kotobee Author again, and again. Each time I ran the installer as an administrator with the same result.
I downloaded a version of the installer from the Kotobe Author wbsite, the page that a link is provided for on the SOS Success page, at the top of the page, the page that appears after you have completed your personal information on and then cleared the recaptcha hurdle. Hope this helps anyone having installation problems, it might help those saying that they had problems instaling it on Macs. It appears that there is something wrong with the installer downloaded through the SOS Helper, that file is a bit bigger than the direct download from Kotobee.