Hi!
I confronted the same problem, msvcr100.dll and msvcp100.dll were missing. First I installed C++ redistributable version 2013, but it didn't help.
I have another computer, where the Spriter works just fine. There I have several versions of C++ redistributable versions, so my conclusion was that some other package is also needed.
Without further investigating, what is the exact needed package, I ended up to download the package, which includes all C++ redistributables:
https://www.techpowerup.com/download/visual-c-redistributable-runtime-package-all-in-one/
Yes, this is not Microsoft official page, but I decided to trust this site. After running this package (super easy install, just one .bat file to run as administrator), Spriter started to work.
Gaming Penguin got a reaction from Mike at BrashMonkey in I cannot open Spriter