Updater does not install updates

I have one client who is behind a firewall (not sure if this is the cause or not) but when he tried to do an update it appeared to download the update then gave him the message that the updates will be installed when the application is restarted. The problem is that it never installs the update and he always gets the message when he starts the application.

Is there a registry setting or something somewhere that I can have him clear to get rid of this message? I have had him try to run the updater stand-alone but it does not correct the problem.

I remembered that after an abort the cache needs to be cleared. I had my customer run the command lines:

rmdir /s /q "%userprofile%\wc"rmdir /s /q "%appdata%\wyUpdate AU"

and the error went away. Glad I saved that off with some notes.