is it possible that the pickling example is currently not working?
I ran it inside a ipython3-shell. After the script finished, I looked at loaded_data which is indeed an array of BaseVectors, however, taking the first of these it turns out to have size
In : loaded_data.size
which does not seem to be correct
Trying to print the vector causes a segfault.
I also tried plain pickler, not NgsPickler, yet with the same result.