Tries to install to DVD RW drive Win7 64Pro

I just downloaded 5.2.5 On first attempt, the download terminated early, but I didn’t notice that the file size was too small. I tried to install, which didn’t work and it “rolled it back.” Since then I have downloaded the entire file and tried to install it. It keeps saying that I’m out of space on drive F (a DVD RW drive) and asks me to select a different install location, but when I go to that dialog box, the install location is the default one on drive C.

So far, I’ve tried installing both 32 bit and 64 bit versions with the same problem. I’ve tried making and then choosing a different folder in “Program Files” on drive C. I’ve deleted the folder with the previous version and all registry entries that turn up in a search for ‘libreoffice’ and then rebooted. So far, always the same problem with it telling me I’m out of space on drive “F.” I looked for a portable version, hoping to avoid having to install at all, but that’s apparently not currently an option.