I found this topic and wondered if it would be my solution, but I don't know exactly what I need to do to test it:
"Dear Mark,
Lets say you have created 2 custom fields: pdf-thumbnail and pdf-file. The code you need in your Content Template is:
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<a href="[types field="pdf-file" raw="true"][/types]">
[types field="pdf-thumbnail"][/types]
</a>
Please let me know if you are satisfied with my answer and if I can help you with any other questions you might have.
Regards,
Caridad"
Also, I only want my users to have to attach their pdf file and an image/thumbnail of that pdf to be generated along with the link to open it in a new window.
2. Can you please clarify that you want to allow user to attach their pdf file and an image/thumbnail of that pdf using CRED form? OR you want to allow logged in users to attach their pdf file and an image/thumbnail of that pdf from wp dashboard?
From what I could read in the forum it looks like what I'm trying to do isn't possible, so I am going to tie the rtMedia plugin to my posts to achieve my result.
This ticket is now closed. If you're a WPML client and need related help, please open a new support ticket.