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Error: Value cannot be null. Parameter name: value DotNetNuke Forum Module.
Posted by on 24 October 2012 03:25 PM
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Applies to: DotNetNuke version 4.x.x
Symptoms: When you click on a forum you get the following error:
Exception Details: System.ArgumentNullException: Value cannot be null.
Cause: After a while of inactivity the user gets logged out, which causes the "AuthorID" to default to 0 in the database, and since there is no user with a UserID of 0 it causes a 'value cannot be null" exception.
Work Around: To fix this in the database, there are two tables that needs to have their entries modified. they are "Forum_Forums" and "Forum_Posts"
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