I have a new query that is generating this error message any time I change anything in the Config Tool:
Unable to generate preview due to system error null
The query saves OK & actually displays as expected in my app. Just a pain in the ....
I've tried restarting the Config Tool & restarting the Control Panel.
I also tried over with a anew query. It's only one BO that I have this issue with.
Anyone else had this issue before?