KB46093: "Object Second Class has already been deleted or is in an invalid state" error message appears when editing a dynamic date filter in a view filter in MicroStrategy Analytics Enterprise 9.4.1

SYMPTOM:
 When editing a Dynamic date filter in a view filter from grid view in Strategy Analytics Enterprise 9.4.1, users may encounter the following error:
 
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Object Second Class has already been deleted or is in an invalid state. 

1. Create a new report with Day and Profit.  In design view add a dynamic date filter to the view filter:  "Day where ID Between Day 1 of the month of (today minus 36 Month(s)) AND Day 1 of the month of (Today minus 24 Month(s))" 
2. Execute the report
3. In grid view change the condition in the view filter to: "Day where ID Between Day 1 of the month of (today minus 36 Month(s)) AND Day 1 of the month of (Today minus 23 Month(s))"
4. Execute the report again
5. In grid view click on the "Day 1 of the month of (Today minus 23 Month(s))" part of the filter.  And then the error message will be shown.

 
CAUSE:
 This is a known issue in Strategy Analytics Enterprise 9.4.1.  
 
WORKAROUND:
 Instead of attempting to edit the view filter in grid view as described in step 5 above, put the report back into design view before editing the view filter.