As a long time user of the previous version, I was excited to try v 3.0

Downloaded, and after no small amount of head-scratching, realised I had to use "Import" to open my previous 'processes'

Got them in, seemingly intact then tried to delete a project that was now finished.

Process 3 promptly quit.
Safari became unusable and eventually quit unexpectedly.
Mail.app did the same.
Followed by BBEdit.

None of the apps would re-launch without quitting until a restart.

Needless to say, I won't be touching Process again. Ever.