Under normal usage server errors are very rare in YourVirtuoso. If you are experiencing regular errors, please let us know, but first check out this possible cause:
The YourVirtuoso application communicates with your computer over one or more internet "sessions". If you have several windows or tabs open logged in to YourVirtuoso, it tries to keep track of which is which, but there are situations where this causes a conflict and then... Server error.
We recommend that you open ONLY ONE ADMIN WINDOW or tab at a time for your admin site. It is fine to have your public site open at the same time, as long as you do not log in to it as a family user.