Hi, I have the following line in BaselineOfBloc: (postLoadBloc:) FFIExternalStructure withAllSubclassesDo: #rebuildFieldAccessors. If I don't rebuild accessors, some offsets are nil in external structures. However, on Windows 32bit it fails with the following exception: [image: Inline images 1] How to reproduce: 1. Take Pharo 7 (http://files.pharo.org/get-files/70/pharo.zip) 2. VM (http://files.pharo.org/get-files/70/pharo-win-stable.zip) 3. Excecute FFITestArrayStructure rebuildFieldAccessors Links to Image and VM I took from SmalltalkCI. The reason I'm posting this is because Bloc Appveyour builds fail and more importantly Stef will give lectures in Prague and they will use Bloc for the semester projects. Not being able to install Bloc on Windows is not nice :( We wanted to release alpha version of Bloc and now we can not. Cheers, Alex