Please run this command on the command line, after cd'ing to the Stencyl directory.
runtimes/jre-win/bin/java -jar sw.jar
We need to figure out how to fix the launcher. The launcher problem has nothing whatsoever to do with anything but the kind of OS or machine you have and isn't a problem with Stencyl itself - it's the software we used to build an EXE (Launch4j).
In lieu, I'm looking at throwing the launcher out and making one from scratch instead, but I need to know if that command (or a similar one) works on these setups where the launcher did not function.
If the above works, try this more comprehensive one.
runtimes/jre-win/bin/java -Xms64m -Xmx1024m -Djava.library.path=./lib -jar sw.jar