Many thanks for the response, @Lusil. I can't stop the app to check - the save-as (over-write) function comes from within the app. If I stop the app, I can't save-as. However, I can surely over-write the file if the app is shut down, this is certain. The app uses a database, but this function that is failing is saving a conversion to/from a PDF, so I can't see why it would need a hook to the previous file (which zeros out to no KB data after the first fail, and still can't over-write even then). I.E. I don't think the DB is looking at this file. However, it is possible that they've got some incorrect code in there that is holding it open for some reason for just a little too long. No way to know that. Save and edit works fine. This is only a problem when trying to create a new instance of something and over-write an existing document. There is no reason why the old doc should be opened, but perhaps this is the issue. Based on what you've said, it sounds like I need to reach out to the folks who wrote the app.
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I'm having the exact same problem that @G2B wrote about. I can save a file, a csv of about 50KB, then when I try to overwrite the same file later, I get the same issue - file is locked. This is saving from a program called Meet Manager. I've used this program for years with Dropbox and this was not a problem until last summer. When I pause sync, the file saves perfectly every time. As soon as I turn sync back on, it fails with same msg. I can't believe that the application is the issue - if it were locking the file, it would fail when DB was paused; it does not.
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