Attempted to read or write protected memory. This is often an indication that other memory is cor (4235487)

While modifying my code and pressed F5 to execute the code and this error came up, it was working fine up to this point. It does not kill the app, and it does execute the code.

Error may also when connecting to a  database.    The connection may be successful.

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Exception Information
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Exception: System.AccessViolationException
Message : Attempted to read or write protected memory. This is often an indication that other memory is corrupt.
Stack Trace:
at QP5Proc16(Int32 , Void* , Int32 , Int32 )
at Quest.QP5.Shell.Chunks(String text)
at Quest.Toad.Util.Global.StatementParameters(Connection connection, String sql, PredefinedParameterCollection predefinedValues)
at Quest.Toad.Db.ScriptEngine.Statement.GetParameters(Connection connection, SpecialExecuteContext context)
at Quest.Toad.Db.ScriptEngine.ExecuteBackgroundStatement(IDbConnection localConnection, Statement statement)