Boinc 7.2 doesn't build with wx3.0.
This is a known problem, and it has been already fixed in 7.4 releases.
I'll be really happy to upload the new release as soon as 738849 [1] is fixed, since the new release uses webview and doesn't build with the current package.
[1] https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=738849
cheers,
Gianfranco