Page History
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Use the Error Logs command to display and choose the type of error log:
The time and date of the error you are looking for are shown on the left Details pane, and the right-hand pane shows the related details:
The Details pane lists the most recent errors sorted by date. Only the latest 250 messages are shown in the dialog. If you wish to view a complete list of all errors, open the text file containing previous messages using the 
Open icon on the toolbar.
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You can keep this modeless dialog open when developing your application.⇑