Two tricks how to protect presentations from struggles with displaying on different computers.
First, ask your technician to compare the sides of the displaying device (projector) at the event venue. Modify your presentations according to that, and require from other speakers to deliver the supply of presentations accordingly.
And the result?
Absolutely professional look!
Second, check the presentation properly and save a special image copy for your technician. However, mind the fact that this copy cannot be edited anymore, therefore make sure you have the original version available.
By doing this, you will ensure that you will see the presentation during the event exactly the way you wanted!