BullCharts 5.1 for Windows 10 for an existing installation of BullCharts (you must have BullCharts already installed as the upgrade has no database.)

http://download.weblink.com.au/bullcharts/bc510/BCUpgradeV5.1.exe

BullCharts 5 Reset for 4k Monitors if the Toolbar icons are too large

If after installation of BullCharts 5 the icons are too large try resetting.

https://kb.bullcharts.com.au/knowledge-base/bullcharts-version-5-0-icons-too-large/