Primary Download TTax 2018 on November 7. Did early data entry, lots of forms not available yet.
First Update of Many new Federal Forms and entire CA state form on November 8, then "Error 30".
Uninstalled, used registry cleaner, and restarted Windows 10 64 bit. Reinstalled but prevented auto-update by turning off internet during installation. Now back to working (but not updated) original version from download. I repeated this entire process twice, based upon this "FAQ". I suspect I will try to update after about a week and see if Bug gets fixed. Be sure to go to Online Tab in TTax and set preference to not "Auto-Update".
