Posted 26 April 2018, 3:22 am ESTI had Spread.NET v 11.0 WPF and Win Forms 30-day demo installed in my system. The trial period expired today and while I'm waiting for my company's approval to purchase the software I noticed that SP1 was available so I downloaded the demo and attempted to install Spread for WinForms and WPF+Silverlight. All the components selected were properly installed except for the WPF+Silverlight(Bits). I keep getting a window with an "Install GrapceCity Spread WPF+Silverlight(Bits) Failed" message and no other explanation. The "(Docs)" portion was installed. I also uninstalled the previous version but keep getting the same message ever after a reboot.