Error purging developer audit trail. + ORA-08102

Question

Using the application builder at me workspace on changing a application (available applications-> GO)
gives:
Error purging developer audit trail.
ORA-08102: index key not found, obj# 749791, file 17, block 1720 (2)
This occurs at other workspaces too.

Answer 1

I believe I am getting this same error. I'm using htmldb.oracle.com workspace scot.
It happens when I am working on the Application Builder page where it has the dropdown list at the top to select Available Applications. It defaults to the application I created and have been playing with.
When I select the dropdown and try to goto 25816 Sample Application, it causes the same error as the initial poster, right down to the file and block #'s.
However, if I goto the HTML DB Home page, and instead of clicking on Application Builder, I click on Review Demonstration Applications from the tasks on the right, I can then click edit and be taken to the Application Builder page with the appropriate current sample app.
But once there, I can not use the drop down box to go back to my play application.