Just a reminder - and I realize this is not news to the bulk (all?) of you but it's been a while since I've had to toy with v4.3 and paperless office and with Sage not providing much reason for customers to upgrade I've had a few customers come back to me and say they didn't want to upgrade if they could just get paperless working on their Sage 100 ERP 4.3 with Windows 7.
I had forgotten that in order to enable this you need:
1. Version 4.30 product update 18+ (I use PU 23)
2. The PDF Driver Update
https://www.dropbox.com/s/quek5i0ybik70se/4.30PDFDriverUpdate.exe
Sage's instructions indicate that the above is for 4.30.0.18 - 4.30.0.19 --- however I do NOT believe Sage ever added the above fix to the last PU 23 they issued - therefore you may need to install PU 23 and then install the PDF above
Moral of the story -- merely installing PU 23 does NOT install the PDF Driver update - you need to perform that separately.