I have been working with modifying text in various placeholders:
Dim th As TextHolder = pholders(0)
I find that this works fine when I am using a placeholder type of 'CenteredTitle2', which is the main placeholder on a title slide, but not when I am using a 'Subtitle' placeholder.
I get this: System.InvalidCastException: Specified cast is not valid.
Can you help me out and explain why this happens?