Ok, I was able to narrow it down a bit.
The printing error occurs, when there’s a Linked (Active or Referenced doesn’t matter) block that contains a mesh. Works after Embedding the block or exploding.
Worksession is irrelevant in this case.
Edit: Meshes are irrelevant. Just needs to be a Linked block.
Hi Toni, the option to print external files to vector output using the Hidden display mode is not consistent if the blocks are not inserted as “Embedded and linked”. I hope in a future we will support also “Linked” and “Embedded” blocks