Hi,

Seems like with NAG glycans the addh result is incompatible with phenix real space refinement. It's easy enough to fix by deleting HD2 - the offending hydrogen - manually.

I was wondering if anyone had an opinion about this, before I report a phenix bug.

Error looks like:

Number of atoms with unknown nonbonded energy type symbols: 5

(4 more similar lines).

Best,

-da