Ok, so the worst problems are on a Win 7 x86 (32bit system), was v18.104.22.1683, but also issues on WinXP 32bit, see lower down.
Found some old .PSD files, I assume they never had a thumbnail? Am I safe to rename to psdata without issue?
So, sorry for the different screens, but checking if file age (original version) had any impact...
This is post a Repair install, before opening the software, but same post opening it:
Post a reboot after the install, pre and post opening the software and closing explorer etc
Post a de-install and fresh install with 22.214.171.1248, post reboot etc etc
On an WinXP machine 32bit, the directory folder thumbnails work, but the file thumbnails don't, pre and post complete re-install ... here is good directory folders:
Here is the file preview/thumbnails :
Seems to be fine for psdata files on all my Win7 x64, but no machine regardless of version is doing pddata properly, despite all machines now having been uninstalled and re-installed.