Version install problem

I just downloaded Ver. Got error messages saying dl.exe and GetFile.exe were in use and could not proceed. I tried manually deleting them, but system said they were in use and would not let me delete. I had previously closed WWL, but did not uninstall old version (I never have before). I’ve never had any problems up til now with updating WWL. I am using Vista 32 bit, original release (all updates, but not SP1).

I did get it to work by downloading to a new program files folder and installing there.

Any thoughts?

Thank you in advance,