Hi RodRollTech,
According to your description, I create a collection and show the data on a data table control.
I can run the app on both Web player and desktop studio.
But I don’t get the crashing issue you mentioned. It works properly on my side.

What’s the PowerApps version on your side?
Are you using Web player or desktop studio?
Please try to uninstall and reinstall the PowerApps studio and try again with it.
Please feel free reply if you are still having the issue.
Best regards,
Mabel Mao