It would seem likely to be a system-specific cause to be crashing like that, since those kinds of things are not being reported on any frequent basis.
A new PC is still only as new as the maintenance that has been applied since the date of manufacture, so there may well be Windows maintenance that needs to be applied.
One frequent cause of recent heartburn for several folks was indeed the run-time C++ routines in Windows.
If you have an opportunity to do so, downloading and installing Dependency Walker will analyze Sonar on your system and you can save its output to a file that can be reviewed by folks here in the forum, which may help to identify modules that may be out of date or missing altogether. Post back if you want to do this and need help with doing so.
Here is the link to Dependency Walker:
http://www.dependencywalker.com/ When you do generate the output file, you may have to upload it to somewhere and post a link to it, so that we can look at it.
The above process is not that difficult, and may prove helpful to your situation.
I would add that if you downloaded Sonar install/update files while antivirus software was running, or installed Sonar or Sonar updates while antivirus software was running, that has been reported to cause issues for several folks. I had to temporarily suspend Avast to get a clean download of X3, and others have had corrupted installs when doing so with their antivirus software running, so this is something else you could look at. If you are not sure of it, you can always download the install/update files again - this time making sure your antivirus software is suspended, and compare the file sizes against what you downloaded the first time.
Hopefully, we can get you up and past these problems - X3 is really a wonderful release, and I would hate to lose someone to a competitive product due to some correctable issue.
Bob Bone