Hello, AnshulJain19, Thank you so much for your attempt to help. I have tried your suggestions and here is the result: I created a new document today, Oct 17, 2018 at 11:20 a.m., local European time, then, Saved to desktop: Successful save to desktop. Changes to document: I edited the docu, and it saved those changes successfully, too. Placed docu in folder in hard drive: Successful save to hard drive. Further changes to document: Also saved successfully. Tried to open an old document CC 2018 from the hard drive: App doesn’t allow saving of any changes to that document. Message says “Cannot save “Charcutería.indd” under a new name” when prompted to save the document. (Normally, in previous years’ versions of the app, when updating to the new version, one would open a docu that had been created in the old version and it would prompt you to save it. When doing so, it would offer you the option of saving the docu to the same folder and volume where the old docu was by replacing it. You would click OK and it would convert the file and save it. This year’s CC 2019 offers the same dialogue but on clicking OK it prevents the saving and produces the above message. When insisting on saving, it produces another message that the file is corrupt. It also gives “Error:0” and “Error:1” when trying again.) It happens with all old documents (mine are in CC 2018), not only a few ones. (Of course, I haven’t tried the absolute total of my docus, but I have done so with a large enough number of them to say that it happens to all of them). Try to export the new document to IDML: Not possible: A message that “1 problem (one failure) was found with a background task” is produced. (I was trying to save to disk). Try to export an old document to IDML: Not possible, either. I get the same message. Try to export problematic document with new name: Unsuccessful: I get a message that “The file is damaged”. Document also exports to PDF, and said PDF is then operable. (I mean PFD Print; I have not tried PDF Interactive as I have no interactive functionality in the newly created document). Most puzzling is the fact that once I installed CC 2019 two days ago, CC 2018 documents also refuse to save even if I choose CC 2018 rather than CC 2019 as the preferred format. I get this message: "Cannot save the document. It may be opened by other applications. Close applications and try again. You also use Save As to save it into a new document." But if I try to save as Save As, I get one of the earlier messages above. The problem loops. I really hope that there is some solution to this. The last two days have been unproductive for me work wise. Thank you again for your help. Clueless me will be here if you need me to perform any further tests. Meanwhile I may try an Adobe chat in the work hours here in Spain. Best regards, Javier Azcona
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