Exact same thing happened to me - hours WASTED!!

This is happening to me (Win 10).  I tried saving to different locations and as different users.  I installed it on another laptop (Win 7) and get the same error.

This is also happening to me (Windows 7). Worked great until I took the latest update today. Now unable to save any files. Just wasted 2 hours of my life

having the same problem after the update installed

I am having the same issue after today's update

I installed TT on Win 10, Win 8 & Win 7.  On Win 8 I installed from the DVD and didn't do updates.  Same error.  It even errors after creating a new return.  I am a Network Admin and install software for a living.  I have wasted half a day on this.  Never had these issues and I've used this product in various forms for years.  Frustrating.

I have the same issue. It does not even allow creating a new file.

Same thing, after install TT update can not save any of my returns, even after changing to diff locations. Very frustrating

I spoke to Customer Support.  They say reinstalling fixing it.  However, I have done that, and have installed on 3 different systems with different operating systems and no joy.  They have opened a case with their software developers and have given me 5-7 days for a patch.