I just went through that stacktrace and then mapped it to the code and this definitely has to do with where the jar containing some classes is being picked up from. That codebase location contains a folder named something like "xxx and yyy" which causes this issue. Please post the output of:
echo %JAVA_HOME%
echo %JBOSS_HOME%
and
java -version
from the command prompt from where you are running the tutorials. If that doesn't give us enough hints, then I have one other thing in mind, but let's first rule out the obvious ones.