Thanks Richard. You're right (of course!), it’s a path problem. But it’s a
pretty subtle one, since I obtained the path by executing
put specialFolderPath("preferences") & “/my preferences" into tPrefsPath
Which should have given me a cast iron result. Turns out that this produces a
path with a redundant slash at the front! I don’t think this used to happen.
Anyway when I delete the first char of the path, then it all works. Perhaps
this is a bug - I will try to confirm it and isolate it.
To clarify, I didn’t create the original preferences stack - that was done by
Jacque Gay’s Zygodact system.
Cheers
Graham
PS Sorry for the misleading subject line.
> On 29 Sep 2016, at 16:06, Richard Gaskin <[email protected]> wrote:
>
> Graham wrote:
>
> > I’ve got a preferences stack which is called something like “my
> > preferences”. It’s not called “my preferences.livecode”. It’s a
> > mainstack, not a substack of any other. The path to the stack is
> > of the form
> >
> > /Users/Graham/Library/Preferences/my preferences
> >
> > If I put the path to the stack in a variable and then try to open it
> > from within another stack, as in
> >
> > go card 1 of stack pathToMyStack
> >
> > It doesn’t open and ‘exists’ says it doesn’t exist - but it can be
> > opened from the IDE.
>
> I'm assuming by "opened from the IDE" you mean via the File -> Open Stack
> menu item, yes?
>
> If so, then it would seem most likely the culprit is the path.
>
> With any file I/O operations it's helpful to check both the result and the
> sysError function; the former will let you know something is wrong, and the
> latter will let the OS tell you exactly what the problem is.
>
> Try this:
>
> go card 1 of stack pathToMyStack
> if the result is not empty then
> answer the result & " (&" sysError() &")" & cr \
> & pathToMyStack
> exit to top
> end if
>
> This will tell you:
> - What LiveCode thinks the problem is
> - What the OS thinks the problem is
> - Whether the path looks like what you think it should look like
>
> sysError will return an integer that reflects the OS error code. Most OS
> vendors provide lists of error codes, so if the error isn't obvious from the
> other feedback in that answer dialog a quick Google search should help you
> find exactly what you need to resolve it.
>
>
> > I thought at first this was because I didn’t include an extension
> > (“.livecode”), but that’s not apparently the issue.
>
> Yes, LiveCode will open any file in a valid LiveCode stack file regardless of
> the file name extension. This is by design, allowing us to use stack files
> as documents or other persistent storage in our own apps if we like.
>
> --
> Richard Gaskin
> Fourth World Systems
> Software Design and Development for the Desktop, Mobile, and the Web
> ____________________________________________________________________
> [email protected] http://www.FourthWorld.com
>
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