Sorry everyone for the delayed response.
It sounds a lot like a fatal error. Yeah and the 7z folder will be the only one of many containing printer information, but you won't find the ccc/util folders if you finish the installation or it errors out. You have to extract it and cancel the install because once the temporary files are accessed they change location and rewrite themselves.
The best thing to do would just to be empty the temp folder completely. If anything is still in it afterwards, it is because it is running in your processes of the task manager (alt/ctrl/delete).
So extract the full feature software from the website then go to the 7z folder>>util>>CCC>>>L3 uninstall. Reboot.
Next run Disk Cleaner in your accessories. Reboot.
Run CCleaner and back up your files before you run it using their software (sorry if I've told you this before and it didn't work). Reboot.
Review some additional steps in this link if you have already tried the above or if I am not giving you steps that you may feel are not applicable.
If you are still unable to scan or install, this is almost the extent of my knowledge regarding that matter as I do not mess around with regedit unsupervised myself but you can always try to restore to a previous point or re-install your operating system but I always hated telling people to do that because I truly feel there is a fix like going into your Program 86x files and repairing the scan.msi or digital imaging monitor in there but seriously this is the entire index of every fix ever posted, right here in this post unless you really want me to get creative lol in which case I probably can think of a few hundred more steps to try ;) but I'll keep trying if you do.
Good luck and I'll guide you any way I can. Don't forget about Windows Fax and Scan.
I really hope this helps.
