7.7.1 update causes error when opening QDATA.quicken file

joe884nh

I just updated from 7.6.1 to 7.7.1, and now Quicken won't read my data file. When I start Quicken I see this error:
The document “QDATA.quicken” could not be opened.
“QDATA.quicken” was last opened on Tuesday, March 26, 2024 by Quicken 7.6.1 (Build 706.52627.100).

It then shows me the "Lets go started" window. If I try opening my data file from there, I get adifferent error.

The document “QDATA” may already be open on a different computer.

Has anyone else run into this?