How did you make the copy?
We took the original file via an email attachment, and used PrimoPDF to create a new file. It is in this new file that we cannot use the word search features. The Reader version is 8.1.4.
I also tried this on my PC using Reader version 7.0.8, and the search works fine. It can't be a newer version that's causing the problem, could it?
Looks like a problem of PrimoPDF.