Hi Igor, I downloaded the latest beta v15 today and tried testing again but it seemed to make no difference. It runs just fine on a Win XP PC and whilst each .exe show can also be opened and run by double clicking the .exe file on a Win Vista laptop, the encoded actions to exit and run another show of choice don't work, although the current show will exit ok. Just in case I'm doing anything wrong, in beta15 I'm outlining my test method below... Testing comprised creating 4 new short PTE shows, via PTE beta 15, of 3 or 4 slides in a new folder. Then .exe files were written in the same folder, so that an application file could be selected at the later coding stage. Each PTE show was set so the last slide remained on screen. On the last slide the 'Objects and Animation' button was used to add 3 action buttons to each of the last slides. An attempt was then made to link each button to the 3 other .exe shows already created. This was done via the 2nd tag to the right of the control panel - against 'Action on mouse click' I used the drop down menu to select 'Run application and exit'. In the box below this, I browed to select each of the .exe files created. I then saved each revised PTE file and re-created each .exe show, overwriting my initial .exe show versions. The idea being to enable a user to move from any one show to any one of 3 other shows. In XP each show successfully exits and any one of the 3 other shows can be opened and test run as desired. In Vista a button mouse click action just exits the current show (ie first part of the action) and the command to run a defined show appears not to be recognised. Hopefully this makes sense to you, and I'm hoping you may be able to 'tweak' something to have Vista behave more like XP. Ricky