I have the same problem.
The first ConDoc tools installed on my system is ConDoc 4. There is no any previous version even been installed.
The work around is to set the “output resolution” to the same setting as the one in the File/Document Setup/Paper/Rendering Resolution.
But, this work around only works up to “Median” resolution. I will get the “there was a problem exporting the file.” if “High” resolution is set.
Since only “Median” resolution can be export, the dashed lines look broken on the exported PDF file.
It’s really painful. I’ve not be able to use ConDoc 4 to publish any plan document yet.