"Failed to save main Tiddlywiki file. Changes have not been saved"

[Rafael Garcia]

Please help me figure out why I can't save. I've been using my mGSD TiddlyWiki successfully for a few years until today. I can't reboot my computer until I figure this out because I'd prefer not to lose my recent changes!

The details:
mGSD 3.1.7 beta
Firefox 5.0
Windows 7 (64-bit)
Error msg when attempting to save: "Failed to save main Tiddlywiki
file. Changes have not been saved"

The only possibly relevant recent change - I use Outlook for my work e-
mail; this morning an IT staff migrated my mail from servers owned by
my employer, to some Microsoft could servers. I don't know any details
of what was involved in this.

[yenny]

Hi there,I was look at this problem for a long time i have discovered
that.

You need to uncheck your folders to read only for it to work

[Scott Simmons]

Hi, Rafael —

I encountered a similar fatal error earlier this year on Win7, and it's happened to me once or twice since then.  In my case, the Save is possible but my TW is overwritten -with a completely empty file.  You can read up on my experience here:

https://groups.google.com/d/topic/tiddlywiki/9c3hfHIJDdI/discussion

It's very rare and, as far as I can tell, has only happened to me when I've had multiple TiddlyWikis open at the same time.  I suspect it may relate to a browser thread crashing or hanging up in the background, but that's pure speculation.

To protect myself, I use Tyler Akins's BackupOptionsPlugin (http://rumkin.com/tools/tiddlywiki/#BackupOptionsPlugin) to back up my TW with each save (and overwrite the previous backup, so I don't end up with tons of backup files).  However, I still have to be careful not to allow TW to save once the error occurs; otherwise, BackupOptionsPlugin would overwrite the backup with a copy of my emptied TW!

—

A slightly less-involved possibility:  I've noticed that in my browsers of choice (Maxthon 2 and Maxthon 3), I can save a TW several times without getting the prompt that normally displays for my first save.  But once I open a tab that displays a non-local web page, the next time I try to save TW, I get the prompt (and lose my changes since I have to allow saving for the first time before I'm able to save any changes).  Is it possible you were working in Firefox with only your TW open, then opened another tab, then encountered the first-time-during-the-session "save" dialog?  (Honestly, I've forgotten how this works in Firefox since I don't use the 'Fox with TW all that often.)