I was having trouble saving as well.  Applied the Firefox addon & working 
perfectly.  Thanks Jeremy for the solution!

On Thursday, September 13, 2012 10:31:33 AM UTC-7, Jeremy Ruston wrote:
>
> For security reasons, Firefox 15 disabled the feature that TiddlyWiki 
> used to save changes to itself on a file:// URI. 
>
> There is now a Firefox extension that you can use to restore saving 
> functionality to TiddlyWiki: 
>
> https://addons.mozilla.org/en-US/firefox/addon/tiddlyfox/ 
>
> It's currently classified as an alpha, largely because it clunkily 
> pops up a confirmation alert whenever it is activated by opening a 
> TiddlyWiki document. There will soon be a checkbox to say "don't warn 
> me again about this file". 
>
> If you'd rather not install an extension, you can also edit your 
> Firefox preferences files to re-enable saving for specific TiddlyWiki 
> files as discussed in this previous message: 
>
> https://groups.google.com/d/msg/tiddlywikidev/1Em8cJviVKk/LVGKpu2LzeAJ 
>
> Best wishes 
>
> Jeremy 
>
> On Thu, Sep 13, 2012 at 5:37 PM, Mark Ungrin 
> <[email protected]<javascript:>> 
> wrote: 
> > Hi - I am having trouble with saving TiddlyWikis. I have one file I've 
> been 
> > using for quite a while now ("LabBook_MU.html"), it works fine. But any 
> > variations I try give me the following errors: 
> > 
> > "Failed to save main TiddlyWiki file. Your changes have not been saved" 
> > 
> > and then when I hit OK 
> > 
> > "Failed to save backup file" 
> > 
> > the messages are correct, the file is not modified. 
> > 
> > Firefox 15.0.1, Win7 64 bit 
> > 
> > This happens: 
> > 
> > 1) to a copy of the LabBook file in the same directory, with a different 
> > name 
> > 2) to a copy of the LabBook file in a different directory, with 
> unmodified 
> > name 
> > 3) if I open the original / working LabBook file with a new FireFox 
> portable 
> > install on a USB stick 
> > 4) if I open a clean TiddlyWiki downloaded from tiddlywiki.com 
> > 5) if I take the clean install from #4 and copy-paste it via a text 
> editor 
> > to a new file, as suggested elsewhere in the forum 
> > 6) if I open a timestamped backup of the working file 
> > ("LabBook_MU.20120913.1612425560.html") 
> > 
> > all of these fail with the same errors. 
> > 
> > I assume it's something specific in my FF profile, but the words tiddly 
> or 
> > labbook don't find anything under about:config or if I just search my 
> whole 
> > profile folder from Windows Explorer. 
> > 
> > Chrome works as long as TiddlySaver.jar is present, but for various 
> other 
> > reasons I want to get it working in FF. I want to set it up for some 
> other 
> > users, so simply continuing to use my working file without knowing why 
> it 
> > works when everything else fails is not an option (and anyway it makes 
> me 
> > nervous, if it dies I won't know how to fix it). 
> > 
> > Any suggestions? 
> > 
> > thanks 
> > 
> > Mark 
> > 
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>
>
>
> -- 
> Jeremy Ruston 
> mailto:[email protected] <javascript:> 
>

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