WindowBlinds uses the wrong registry type when enabling/disabling "Apply accent colour to backgrounds (recommended)" under WindowBlinds > Settings.
The registry key in question that is changed:
[HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize]
"ColorPrevalence"
The type of this key should be a REG_DWORD with a value of 0x00000000 (0) or 0x00000001 (1), but WindowBlinds changes this registry key to the REG_SZ type with a value of 0 or 1, depending on whether the user enables or disables said setting I mentioned above.
This causes other applications that reads this registry key to throw an exception or fail, depending on how they're coded. See this issue on EarTrumpet for an example.
The registry key can easily be fixed by changing the "Show accent color on the following surfaces: Start, taskbar, and action center" in the Settings app > Personalization > Colors, at which point Windows will recreate the registry key to the appropriate type.
Version:
Windows 10 Pro (15063.rs2_release.170317-1834)
WindowBlinds 10.6 (042 - Windows 10 Edition) - 64 bit OS
Window titlebar blur features are enabled on this operating system
Wblind.dll 2017/03/27 18:42:41
Wblind64.dll 2017/03/27 18:42:46
Wbsrv.dll 2017/03/16 19:16:46
WB10Config.exe 2017/03/27 18:42:09
Wbload.dll 2017/03/22 15:59:51
Screen10.exe 2016/09/12 19:04:17