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NSDocument called FSPathReplaceObject() and -39 was returned

Subject: NSDocument called FSPathReplaceObject() and -39 was returned
From: Sanford Selznick <email@hidden>
Date: Thu, 29 Nov 2007 17:46:31 -0700
Delivered-to: email@hidden
Delivered-to: email@hidden

Hello,

I have an NSDocument based application. Starting in 10.5.1 users have been been reporting that their document changes could not be saved, and that the following has been reported to the Console:

  "NSDocument called FSPathReplaceObject() and -39 was returned."

  -39 is eofErr.

  I cannot reproduce this myself.

I've seen in the debugger that FSPathReplaceObject is called from [NSDocument saveDocument:]. My code does not directly call FSPathReplaceObject.

The users experiencing problems have fixed their permissions and rebooted multiple times. If they do a Save As..., the users never have this problem again with the new file, but continue to have the problem with the old file **in the same directory**.

The files are never larger than a few hundred K, and are written upon request in my NSDocument subclass by [myNSData writeToFile: atomically:YES], which returns YES.

Any ideas on why FSPathReplaceObject is returning -39 (eofErr), but only on some systems? And only for a specific file?

  My software is built against the 10.3.9 SDK.

Thank you,
  Sanford
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