I got the files to work now. I opened them in .48 and deleted some unnecessary layers, and now they open in .92. I'm not sure what in those layers were the issue, but it seems it's resolved now. Thanks for the suggestions though!

I apologize if this has been solved elsewhere, but I can't seem to find any info. Anyway, I recently got a new computer with Windows 10, and installed Inkscape .92, after using .48 on my Windows 7 laptop for several years. I tried opening svg files created in .48 on .92, and it freezes, and then it ...