Hi Esther, Many thanks for your reply. I was using Preview to convert a JPEG file to a PNG file. I created a duplicate of the JPEG file and then did a save of that duplicate after setting the file type to PNG. All this is on my normal Lion hard disk. The process had worked for several files but I had not been very good at deleting old files so quite a few were still left around. The files which won't save are the PNG versions of two files which do not exist anywhere other than as working files in Preview.
I have indeed tried re-booting and clearing caches which did allow me to reduce my 10 open files to just 2 open files so that is progress. It is getting late now but I will try your idea of rebooting in safe mode. I do have Onyx and Cocktail - would they help at all? I am away tomorrow so more work on this will have to wait until Sunday. I will keep you posted on how it goes.... Many thanks. Paul Hopewell On 2 Sep 2011, at 22:54, Esther wrote: > Hi Paul, > > This one is a puzzler, but it sounds as though you might be using Preview to > make changes in a graphics file using the Tools menu. Alternatively, could > you be opening a file that is corrupted, or not really a supported file type? > If the file is on an external volume that is not writable, make sure that > you leave any windows that point there. (For example, on an externally > mounted hard drive, I sometimes navigate down to a directory in a Terminal > window.) > > What happens if you force quit the app, and then go to the affected file(s) > in question and select it to open by default in some other app, like Skim? > Can you check with the Activity Monitor that Preview is not running at all > after you force quit? > > I assume that you tried restarting your machine and also clearing out caches? > I've found that in some instances I can fix problems by booting into Safe > Mode, which moves problem caches, including font caches that can be a problem > for Preview, into the Trash. I believe that Martin McCormick has used this, > and also reported that he was able to log into the machine via SSH past a > certain point. > > The problem with safe mode boot is that audio is disabled, so you can't run > VoiceOver. However, I've been able to fix some problems by just booting into > Safe Mode, and then restarting my machine after I've done this, without > having to actually access the system under Safe Mode. You hold down the > Shift key when the system boots up, and the boot process takes longer to do > than usual, because a directory check of the startup volume is forced as part > of the process. > > Here's the Apple Document about booting Mac OS X into Safe Mode: > http://support.apple.com/kb/HT1455 > > A google check indicates that Safe Mode should still work under Lion. > Sorry not to have more thoughts about this. > > Cheers, > > Esther > > On Sep 2, 2011, at 11:16, Paul Hopewell wrote: > >> Hello, >> I am running Mac OS 10.7.1 and am stuck in a hang/loop in Preview. >> >> Whenever I try to exit Preview or close a Preview window I have a dialogue >> asking if I want to save the changes to file x. Whatever I choose (don't >> save, cancel, save) I cannot get out of this loop. I have to force quit >> Preview. >> >> If I select the window chooser wile Preview is the active window I see some >> 10 windows related to different unsaved Preview documents. Whichever one I >> choose I still cannot exit Preview. >> >> If I look at the Preview Windows menu I see that two windows are checked for >> display. That is probably a bug and may be the cause of my problems. If I >> try to look at the Preview preferences I go back to the save dialogue and >> again have to force quit Preview. >> >> SO how can I recover from this situation and make Preview usable again? I >> tried deleting all the Preview preferences in the LIbrary folder but that >> did not help. I have time machine and SuperDuper! backups but I don't want >> to reset my entire system to some earlier time before the above problem >> arose. I just want to reset Preview to an earlier time. >> >> I would appreciate any suggestions as to what I should do. >> >> Many thanks. >> >> Paul Hopewell > > <--- Mac Access At Mac Access Dot Net ---> > > To reply to this post, please address your message to > [email protected] > > You can find an archive of all messages posted to the Mac-Access forum at > either the list's own dedicated web archive: > <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> > or at the public Mail Archive: > <http://www.mail-archive.com/[email protected]/>. > Subscribe to the list's RSS feed from: > <http://www.mail-archive.com/[email protected]/maillist.xml> > > The Mac-Access mailing list is guaranteed malware, spyware, Trojan, virus and > worm-free! > > Please remember to update your membership options periodically by visiting > the list website at: > <http://mail.tft-bbs.co.uk/mailman/listinfo/mac-access/options/> > <--- Mac Access At Mac Access Dot Net ---> To reply to this post, please address your message to [email protected] You can find an archive of all messages posted to the Mac-Access forum at either the list's own dedicated web archive: <http://mail.tft-bbs.co.uk/pipermail/mac-access/index.html> or at the public Mail Archive: <http://www.mail-archive.com/[email protected]/>. 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