Hi
I would also check that you have not got smart linking on. Looking at the small picture it is hard to tell.
For information about smart linking please see the following.
https://community.landesk.com/support/docs/DOC-4063
https://community.landesk.com/support/docs/DOC-3853
If this is turned on and you edit a report then it will try and link more tables and attributes then what is needed and this can cause the report to fail as some or many of the new links are the wrong join type.
if it is on then that report would take a long time to correct, and it would be better to turn it off in crystal and then go to a backup of the original report and then make the changes you need.
Thanks
Paul