Support for test compiling with the new Delphi XE5 compiler has been added to CodeSnip v4 and v3.
Only Windows 32 targets are supported when test compiling.
The main release is CodeSnip 4.8.0, which is available in both standard and potable editions. Get these here:
If you're still using CodeSnip 3 for any reason (and I strongly advise you to update to v4), there's also a new release for you - CodeSnip 3.13.0. Get that here.