scan not working in .exe on another computer

[Gintaras]

I was under the impression that scan and wait for image were basically the same thing except that wait continually scans for the duration of the wait time.

Yes.

Isn't the command "wait 15 S "image:h05DA2B14" w1 0 1|16|128|0x400" scanning the whole window 'w1' for the image 'h05DA2B14' for 15 sec or I am misunderstanding this command?

Yes. Flag 16 excludes caption and borders.