I have a problem with Cura 2.7.0 stable. I want to print multiple parts with 'One at a Time' setting enabled, but Cura just refuses to slice. Settings for printhead have been set to a minimum to avoid the 'grey shadows' overlapping.
Cura does not give any visible warnings yet it doesn't doe anything when I press Prepare. It does slice normally when i have it in 'All at once' mode. Furthermore I have tested with just two models on the platform and having them as far away from each other as possible, still no slicing.
Here is an image of what I'm trying to slice:
Is there a setting I've overlooked or is this a bug in Cura?