I have seen similar questions posted, but none were taken to conclusion.
I'm running XP. There are 3 user accounts. All three users are set to administrator. After a clean install of klitekpp243e.exe, the user that installed can use K++ without any problems. Both of the other 2 users receive the error message "Can't find Kazza lite registry keys".
I have tried full clean reinstalls after deleteing registry entries and all folders.
I have tried running C:\Program Files\Kazaa Lite K++\defuserset.exe and KLConfigWizard.exe
I have tried adding the other user to the registry permission list with full control and with "this key only" and with "this key and subkeys". I tried adding a user "everyone".
I have tried installing as the other user with the error message that the registry entry already exists. If I choose "delete registry entries" on install, as the second user, I get an error that I'm unable to delete or overwrite or something. I am also not allowed, as the other user, to delete the offendng registry entries prior to install.
I have seen this problem on the board in 2 formats which are actually the same problem, in that:
"C:\Program Files\Kazaa Lite K++\klrun.exe" returns "Can't find Kazza lite registry keys"
"C:\Program Files\Kazaa Lite K++\kpp.exe" returns "The file you want to load (on the command line or in the registry string key "HKey_Local_Machine\software\k++\applicationname" or in "Hkey_Current_User\software\k++\applicationname") does not exist or is not a file"
With every tweak and reinstall, the user that installed can use K++ without any problems.