Error and inability to configure Performance Alert exclusions

This problem first manifested a few months ago and has only now become sufficiently annoying to look for help with it.  I'm getting CPU Performance alerts on programs I wish to exclude.  When the popups appear I click Details and Settings, but instead of getting the option to exclude I get the error message:  File not found or information is not available for this format 

Whatever the problem is , also keeps the program being added to the list  in the normal config dialog, so again I cannot exclude them. 

 

All of the programs happen go be BOINC/World Community Grid programs which are cpu-intensive  Earlier versions of these programs have alerted and been exclude with no problem, and I don't run anything else which is likely to alert so I have nothing else to compare it to.  I'm getting these alerts every minute now and it's very annoying, but I'd rather not turn the feature completely off.  How can I fix this  or at worst manually add these programs to the exclusion list?