Please take in mind, that Intraweb versions > IW14.0.37 needs a fix by Atozed.
When compiling web applications with XE and XE8, raises a compile error
F2051 Unit IWCGJQCommon was compiled with a different version of IW.HTTP.Cookie.TCookieList`1.AddCookie
We are waiting for this fix.
Alternativelly, you can use Runtime packages on, with at least cgdevtools packages.