Greetings. Recently started more complex rigging (Humans) and immediately stuck with error after Generate button. Every part is applied (armature deform), weight colored.
Misc . info: On top right corner of the screen showed “Reload trusted” and “Ignore”, made both choices and none work, unfortunately; tried with other models had the same problem; link for my pc specs if needed. http://www.pasteall.org/53183 - specs
When you setup the metarig, did you move it before you edited it? If so, you need to freeze the transforms, otherwise the rig will be created with the initial transforms. In other words, yours will be ignored.
With various experiments managed to see the rig (with “spheres”) fit mesh precisely, but that rig itself doesn’t move the mesh…
If there is full guide for rigging please post the link