I have found
"HotfixLevel"=dword:00000002
in the registry of a previous installment of Delphi XE7. The current installment does not have this key. What does it mean? There are other updates beyond Update 1?
The key is located in:
[HKEY_CURRENT_USER\Software\Embarcadero\BDS\15.0]
I have Delphi XE7 Update 1.
Hot fixes are updates released outside the normal update schedule. It seems that you have, on one of your Delphi installations, installed the hot fix identified by that value.