Send PDFs. NEVER EVER send an IDML for printing.
I sent the client an email with the idml images because they are business cards that will be printed with name changes. I’m assuming thats why the printer asked my client that I supply these type of files so he can put the names in. I attached the idml files to an email to my client. I’m assuming the client forwarded the email with the attached files. So how is he supposed to print the other names if its a pdf? Thanks for getting back to me.
If the printer cannot be bothered to have up to date software you and/or your client should be looking for one that can.
BTW, you never mentioned WHY you’re sending IDML files instead of native InDesign files nor did you indicate what version of InDesign or the printer is using.