Vapor is crashed while selecting new renderer and setting renderer name

It’s crashed when I define variable with numbers only.

Hi, VAPOR uses XML to store its current state, which has the following restrictions:

    - Element names are case-sensitive 
    - Element names must start with a letter or underscore
    - Element names cannot start with the letters xml(or XML, or Xml, etc) 
    - Element names can contain letters, digits, hyphens, underscores, and periods 
    - Element names cannot contain spaces

However VAPOR should not be crashing. We have a ticket for this that should be fixed in 3.9.1, which should be out before the end of the year.

Thanks a lot!
It is very useful and helpful information.