I am currently going through an exercise of plotting to pdf drawings returned from one of our site's some years ago. If the missing xrefs are DWG files I get the pop up box telling me that there are missing files.

However if the missing xrefs are jpegs I do not get the pop up box.

Is there a setting I am missing so that the pop up box will show me that these files are missing without having to check first?

I'm sure one of you clever folk will tell me I can do it with lisp or something but not something I have got to grips with

Thanks for any help you may be able to offer.