We reported to Blackboard support a course with broken navigation in the Discussions tool on February 20, 2006. The symptoms were that students could not access the navigation required within the Discussions (either from course content links or from the course content menu) in order to select a topic or open a discussions thread. The instructor or designer could navigate using the Build and Teach tabs. Many of the Discussion topics had date criteria set, but within the date range the topics were still not accessible.
As of yesterday (April 17, 2007), Blackboard Support indicated that there is data corruption within the selective release in this course shell. They indicated the specific topic to open and delete all Date Range criteria. When selecting Selective Release, there appeared to be two identical date range entries. When both were deleted, the course functioned properly.
When asked what caused the problem and how to avoid it, Blackboard Support indicated: “This is another issue in the code. A CR was opened to change the code to prevent the issue from occurring. Unfortunately, there is no way to avoid this from an end user perspective.”
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It's interesting in that we had a similar issue related to problem Selective Release Criteria that caused odd behavior. An instructor uploaded a PPT file, set release criteria and then somehow deleted the PPT file. The Release criteria were still in place and resulted in a blank Course Content Home page. After an hour of fiddling around, we finally found the link to the missing file. Removed the offending Release Criteria and everything came back.
Just wondering if the two issues (yours and mine) are related somehow to the Selective Release component.
John Martin
Coordinator of Learning Technologies
Plymouth State University
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