Do you have the latest version of DKS (1.4.9.70)? You can check the version in the main menu. If needed you can download the patch
here.
If you need the patch, you will probably also want the DRM free executable. If the game was already updated, it may already have had the DRM removed; if you were asked for an activation code when installing Securom is still present; if not, it may have been removed, or the installer just checked the disk). If needed, you can
download this and extract it into the bin folder, overwriting the original (or rename it first, if you wish, but there is not much reason to keep the DRM version).
Securom is not compatible with Windows 10, so if you are using that version of Windows, likely the game is updated and the DRM already removed.
If that doesn't help, please email supportdks@larian.com, with your latest save (or one before entering General Raze's inner headquarters).
Saves are in the folder:
C:\Users\<UserName>\AppData\Local\Divinity 2\Savegames
You may need to set Windows Explorer to show hidden files and folders (see
here)