PDF support is a built-in feature of Mac OS X so, no, you don't need to install a PDF printer/etc.
It is possible that your crash is related to this Java issue:
http://www.archicadwiki.com/Bugs/CannotSavePdfAfterJavaUpdate?highlight=%28pdf%29%7C%28crash%29
except that you say you are in 10.7 and that article is about 10.6 ...
Have you run Apple > Software Update to be sure that everything is up-to-date on your Mac?
Contacted tech support?
Karl
PS I'm changing the title of your post to include PDF in the hope that someone else who has seen this issue might respond with a solution.
One of the forum moderators
AC 28 USA and earlier • macOS Sonoma 14.7.1, MacBook Pro M2 Max 12CPU/30GPU cores, 32GB