I have just finished my first sulphur WU, and got another one downloaded over the weekend. It is happily processing right now.

But looking at the CPDN folder
C:\\Program Files\\BOINC\\projects\\climateprediction.net I think there may be some redunant stuff. This is what resides in there - are there things I can delete?

• hadsm3_4.13_windows_intelx86.exe
  
• hadsm3data_4.13_windows_intelx86.zip
  
• hadsm3se_4.13_windows_intelx86.exe
  
• hadsm3se_4.13_windows_intelx86.zip
  
• hadsm3um_4.13_windows_intelx86.exe
  
• hadsm3um_4.13_windows_intelx86.zip
  
• sulphur_4.22_windows_intelx86.exe
  
• sulphur_data_4.22_windows_intelx86.zip
  
• sulphur_se_4.19_windows_intelx86.exe
  
• sulphur_se_4.22_windows_intelx86.exe
  
• sulphur_se_4.22_windows_intelx86.zip
  
• sulphur_um_4.19_windows_intelx86.exe
  
• sulphur_um_4.22_windows_intelx86.exe
  
• sulphur_um_4.22_windows_intelx86.zip
  

My guess is that I can delete everything that is not 4.22, but can I also delete the 4.22 ZIP files?

Assuming you don\'t have any workunits in the Work tab from those versions, you should be able to delete all the 4.13 and 4.19 stuff. The 4.22 zip checksums are in your client_state.xml file so I don\'t think deleting them would be a good idea.

Yes, only 4.22 - thanks for the explanation!