You'll noticeTier: how much it should matter to you
2Useful: my rating, 1 to 5
2Signal: worth watching, 1 to 5
ElsewhereArea: what it touches
ImprovementsKind: in v2.1.233,
ImprovementsSection of the release
What
File read, file write and attachment handling previously treated only UNC paths (\\server\share or //server/share) as network paths. They now share one check that also recognises automounter paths of the form /net/<host>/..., and the attachment error text says so.
Evidence
is a network path (UNC or /net autofs), which is not supported.
Strings lifted out of the shipped bundle, so the claim above can be checked against them.