When I try to insert a chart in PowerPont and Word, I receive an error that 
"Some chart types cannot be combined with other chart types.  Please select a 
different chart type."  It doesn't matter what type of chart I choose.  It is 
independent of user profile on the computers, and the Office diagnostics does 
not fix it.  I have tried repairing the installation, but it is on several 
machines, not just one.  I have also tried opening Excel before Powerpoint, 
as suggested on several websites, but that doesn't help either.