Action error message - Acrobat X

Hi,

I have built 2 actions on my computer:

1. for flatten a document

2. for adding background (from a file), page numbers, reducing document size and encrypting

Both actions were working fine.

I have exported the 2 actions, in order to use them on another computer.

The flatten action was working fine. But the other action did not work properly, eventhough I have changed the settings according to the new files location.

This is the error I got:

Image may be NSFW.
Clik here to view.

After no success with the action, I have re-built it on the other computer from the beginning, with the same settings, and it was working.

Any idea?

Thank you in advance