Getting "Invalid page context" exceptions after upgrade to 15.1.12

[kudzu]

Binary compatibility is very hard to maintain in Delphi because of how it compiles and links. While we strive to do so, we cannot guarantee it moving forward as locking down binary compatibility is way harder than source compatibility. Requiring binary compatibility will cripple even bug fixes in many cases for IntraWeb.

Are you not able to compile CG controls from source?