Dear AlessioD, Thank you for reply. In my vi there 3 while loop, but with a timing very very slow (about 250ms for each). I'm working with an OPC server and i acquire about 30 digital signals per quarter of second. (very quiet routine). In the front panel i have load 4 pictures from 4 bmp files for an amount of about 800Kb of bmp images. When i load the vi from remote computer the size of the application is about 2500Kb because i have any other small pictures. Thanks, Andrea
