I don't know what happenend - but it looks like images were stored as a reference only. When You select an image to put into a container-field, there is a checkmark on the bottom of the import dialog..
If the import goes via script, You might check the scriptstep for the checkmark
What you have is expected behavior for a file inserted with the "Store a reference" option specified. Your options for fixing this is to re-insert the images without that option specified or to more the files to a shared location so that all uses can access the file via exactly the same file path and then you re-insert the file from that shared location.
And there is a fee updater available that can update FileMaker 11v1 to 11v4.