Any ideas as to why, suddenly, the Commissions Earned Detail report would not function?  When it is selected, a window briefly flashes up on the screen and then drops us back to the pull-down menu...
 
CS-O is the one in question...
 
It worked fine at the end of last month and we have not upgraded to the latest version yet, but may have upgraded to the previous version sometime in Feb...
 
Thanks
 
John