Amazingly, a bug that existed for months has been coincidentally discovered hours after I made the release. :-))
The alignment of vectors and unions within structs was not being calculated correctly. Fortunately, it was a quick fix. So here's 1.0.1 already! https://github.com/TaylanUB/scheme-bytestructures/releases/download/v1.0.1/bytestructures-1.0.1.tar.gz Taylan