How do I keep that "Launch File" Warning Message from Coming Up?

[JShannon]

I have a couple of image files linked to a .pdf file and I know them to be safe. I'd rather my readers not have to deal with this message.

Any suggestions as to how to disable this thing. I'd appreciate any suggestions.

[PeytonT]

In Acro Reader (though not in the Acro app itself) a check box will appear with the warning that you can check to turn it off. However, that has to be done again each time the PDF is opened. In an earlier version of Reader than the one I currently have, this could be turned off for a particular PDF by going to Edit > Preferences > Security (Enhanced) and un-checking 'Enable Protected Mode at Startup. But this no longer works on my latest version, which calls itself '2002.003.20314'.