When opening a Knowledge Base with GeneXus 16 upgrade 10 or lower, which has Query object saved with GeneXus 16 Upgrade 11 or higher, the following message is detailed:
Knowledge Base at 'PathToKB' contains items that GeneXus doesn't know how to handle and will therefore be inaccessible.
It is likely that the Knowledge Base has been previously opened with a GeneXus installation which had extensions that are not present in the current one.
These items are:
* 'QueryVersion3' - 'Query Version 3' (GUID 025b1afc-982f-4bdb-8fa0-4c1712cb94fc)
Provided by 'Artech.GXplorer.BL' (GUID 6818d053-bcb6-46c3-beb9-41a2bd901d88).
Working on this Knowledge Base may lose information related to these unknown items.
Do you want to continue?
Upgrade the GeneXus version to GeneXus 16 Upgrade 11 or higher.
The Query Viewer control has assigned a Query in it's property definition. Make sure you have set it in design time
QueryViewer.QueryName = &QueryName // must match a Query Object Name.
Check the DBMS properties to make sure the connection with the database is set OK.
Error: This content requires the Adobe Flash Player (version 9.0.28). [http://www.adobe.com/products/flashplayer/|Get Flash]
When assigning a Query Object in runtime you could get the following error:
Error: The Query with name = myQueryObjectName does not exist
In this case the Query Object no longer exists in the related knowledge base; make sure you set it's name correctly.
If you are upgrading GeneXus, check the compatibility section.