"Custom UI Runtime Error in articulate"

Oky, what is UP with this?  Recently, every time I open PowerPoint, the first thing that greets me is :

specific information of error dialog boxI click "okay to all" and it dialog box disappears and seems to not effect the performance of PowerPoint (or Presenter) ...

Anyone know what is going on here? And more specifically, how to make it happy again so that this annoying Error window goes away!?

Thanks in advance,

Alison

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