Does Insert Picture generate popup message?

[K1200]

I use the Insert Picture in a script to place the contents of an image file into a container.  Under FMP14 I'm seeing a very brief message whenever the step executes.  The message title is either "Insert File" or "Inserting".  I have seen both.  But the messages are so brief—just a flash—that I can't determine if there is more message content.  I don't recall seeing them in earlier versions and there is no message option listed for the script step.

• Are these considered "standard FileMaker messages"? ... or could they be coming from the operating system?
• If they're FileMaker messages, can they be disabled?

I'm running on Windows 7 Pro.

Thanks in advance for any help.