I am having the same issue. My path does not have spaces, it is installed the same way it has been since Proseries 97.

If we did have this error in the past a quick close and reopening of PS and QB fixed it. It was very intermittent.

But now it is every single time on all workstations.

The trick of messing with the QB Integration section of the ProWin20.ini file works for a single export, but I would have to do it every single time, and I don't feel comfortable instructions my 12 staff on messing with this configuration file every time.

There has to be another fix.