Zoho Assist Installer wants proxy settings

When I try to install Assist at some customer sites, the installed asks for proxy settings where none is in use. If I close the dialog without entering anything, it throws this error message:

"Configuring unattended access failed due to the following reason :

The request could not be processed by the server due to invalid syntax."

These computers all have a direct internet connection and don't use a proxy at all. There's no VPN in use either. Is there a way to tell this to the installer? Thanks.

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Release Notes: Version 1.91, February 2015
Unattended Access (Beta) is live! Unattended Access, a feature requested by a lot of our customers is live now. Currently, it's in beta. You can add up to 100 computers per Technician subscription. They can also be accessed by your organization members. My Computers list in Zoho Assist home page will always display the online status of your unattended computers. You can rename the computers whenever you wish. Currently, Unattended Access can be configured only for Windows computers. Nevertheless,