pls create disable_EW_XE8.reg as
REGEDIT4
[HKEY_CURRENT_USER\Software\Embarcadero\BDS\16.0\Known IDE Assemblies]
"$(Everwood)\\Bin\\RemObjects.Everwood.RadStudio.XE8.dll"=""
and merge it into registry.
pls create disable_EW_XE8.reg as
REGEDIT4
[HKEY_CURRENT_USER\Software\Embarcadero\BDS\16.0\Known IDE Assemblies]
"$(Everwood)\\Bin\\RemObjects.Everwood.RadStudio.XE8.dll"=""
and merge it into registry.