id summary reporter owner description type status priority milestone component version resolution keywords cc blockedby blocking notify_on_close platform project 19464 Fw: Problem opening local small-molecule CIF file Ute.Roehrig@… Greg Couch "{{{ Hi all, I guess this is a bug? Best regards, Ute ________________________________ From: Ute Roehrig Sent: Monday, November 24, 2025 10:49 To: Mailing List Subject: Problem opening local small-molecule CIF file Hello, I'm having problems opening a locally stored small-molecule cif file. For example, the following runs without problems: open ccd:pim But if I download the file (PIM.cif) and try to open it with ChimeraX, I get an error: open PIM.cif -> No mmCIF models found. open PIM.cif format corecif -> No small molecule CIF models found. Perhaps this is a mmCIF file? open PIM.cif format smallcif -> No small molecule CIF models found. Perhaps this is a mmCIF file? Thank you in advance for your help, Ute }}} " defect assigned normal Input/Output all ChimeraX