HP SCAN on Mac OS X (El Capitan) - not scanning multiple pages continuously

[Wizzmer]

I'm using the HP Scan application to scan documents or pictures one at a time, not using the auto feeder. I can scan 1 document or picture just fine but it won't scan a 2nd document. It prompts me to place the document on the scanning bed and when I start, it just hangs and never completes the scan. I can save the first scan, exit and reload but no matter what I try, I can only scan 1 page and then the software hangs when it tries to scan page 2. I've used this software successfully many times before but at sometime in the past couple of months, it stopped being able to scan multiple pages in sequence. Quite annoying. Thoughts? 

[ShlomiL]

Hi,
From your Applications folder or its HP subfolder delete any existing HP Scan or HP Easy Scan application, delete it by moving it to trash, then empty the trash.

Next install the latest HP Easy Scan below, it will be installed within the Applications folder:
http://ftp.hp.com/pub/softlib/software12/HP_Quick_Start/osx/Installations/Essentials/hp-easy-scan-1_...

Finally, ensure your drivers are up to date by clicking the Apple icon, select About this Mac and then press Software Update.
Click Store on the top menu bar, click Reload Page, click Update All if any updated are available.

Regards,
Shlomi