The IDML should open on their end no problem.
The only thing I can think of is that they have InDesign Version 5 - which is InDesign CS3 and that can't open IDML files.
They would either need to upgrade to InDesign CS6 or InDesign CC - and open it in the new application.
Or you will have to find someone who has CS4 who can export the File to .inx which will open in CS3 (version 5).
Realistically - it would be best if you both worked on the same version of InDesign to avoid any hiccups between versions explained here http://in-tools.com/article/whats-with-back-save-to-earlier-versions-of-indesign/
I think if you're supplying the file back a versoin you should also supply a PDF for a view of how it should look.
Beyond that - it would be best for them to send the edits to you and you make them yourself and reproof it.
Mac vs Win is totally irrelevant here. What happens when they try to
You say you CREATED an IDML. What does that mean? Unless you actually
used the file export or file save commands you didn't do it right.
@Scott – I would recommend an archive file format for sending over stuff via FTP.
Give them a zip file with everything in.
They should download the zip first and unpack that on the working machine.
What happens if they try to open the IDML file?
To clarify my remarks Bob, I exported the original .indd to an .idml. On a further note, There is another PC in my office running Indesign CS6 on Windows and I could not open the .idml there as well.
I use FTP sites all the time and I did zip the contents, as the complete file size was originally around 300 megs.
You keep avoiding the most important question...what happens when you try?
I am waiting on a more detailed response from France, but it sounds like they are receiving an incompatibility and can't open the file with CS5.
Are they trying to open via the FTP site?
Is that what you tried? Opening the folder in the Network for the FTP site files - then tried opening it?
Because that won't work - the files need to be copied to the hard drive for them to open.
No, they unzipped all the files from the FTP and saved them to the desktop.
Can you supply the FTP link here or via PM please?
With our company security, I can't give you the FTP info, but my bigger question is. Can you open an .idml file from CS6 in CS5? I don't think you can. Is that right?
You absolutely can - I posted a link to the reasoning for IDML above.
A properly created IDML file can be opened in InDesign CS4 or later no
matter what version created it.
Try recreating the file, something went wrong.
Can you open an .idml file from CS6 in CS5? I don't think you can. Is that right?
Is CS5 patched to 7.0.4? If not, that could be the problem.
And nobody is using a pre-release or pirated version of ID, right?
Peter, I will check on that. I may not hear anything until tomorrow morning with the time difference in France. Thanks for the help.