[Steps 3 A) ... B) ... c) Go to step 5; Step 5 ... Step 6 ... Step 7 ...]:
This sequence sets full control for {E88DCCE0-B7B3-11d1-A9F0-00AA0060FA31} and Step 8 says to delete {0CD7A5C0-9F37-11CE-AE65-08002B2E1262} but I was getting "Error Deleting Key".
[4. To Disable CAB Folders -]:
This (with steps 5 thru 7) sets full control for {0CD7A5C0-9F37-11CE-AE65-08002B2E1262}; but since step 4c sent me to step 5 and I wasn't concerned with disabling CAB folders, I never went to step 4 in my first several attempts.
Because Step 3 says "To Disable ZIP Compressed Folders -" while Step 4 says "To Disable CAB Folders -
NOTE: You will also need to step 3 as well to disable CAB folders"
I assumed Zip and CAB folders could be disabled separately and Step 4 was not needed to disable Zip folders.