@April , it sounds to me like a dodgy download.
I've run Fossapup since autumn last year, and I haven't noticed any of these issues.
Epdfview - sounds more like a printer issue. It prints for me; so too do Qpdfview, the Java-based JPDFViewer, Adobe's last 'Reader' for Linux (v9.5.5, from around 2012!), and even Foxit Reader running under WINE.
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Last Pass - it doesn't actually run under SeaMonkey. (Never HAS, to the best of my knowledge).
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Background images - two ways you can do this. 'Orthodox' way is to put your image in/usr/share/backgrounds, then it'll always show when you run the background chooser. 'Unorthodox'; stick it in /mnt/home. Leave this ROX window open. Right-click any desktop icon->Backdrop. A wee window appears. Drag your background image and drop it in the box. Sorted.
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GuvcView - never had this happen to me. Guvcview is always pretty stable, if it's been installed properly.....and assuming your webcam's supported & configured correctly. I always research new hardware thoroughly since I've been on Linux; I don't just grab the first bright, shiny thing that catches my eye any longer. As it happened, the very cam I'd been looking to get for years turned out be literally plug'n'play.....because of the UVC kernel module. (And that's been in the kernel for a long time, so it seems.)
The top-end Logitech cams - mine's a c920 HD 'Pro' - were among the first to gain full support, primarily due to their popularity. That, and superb picture quality....
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AbiWord - uuuuuh.....long-standing issue, this one. I use either LibreOffice or SoftMaker's FreeOffice. I even turned the FreeOffice word-processor component into a 'standalone' item.....which works well with most Puppies. But, er, 32GB of RAM does kinda mean I never need to worry about how much space something will take up..!!
As stated above, much of this points a bad download of the ISO.
Mike. 