Currently when SDL Passolo 2018 generates a report for an Update Strings procedure, you will have a Display Report hyperlink that will load the SDL Passolo message viewer.

These messages are HTML coded pages viewed inside the Report window.

It gives you the Open to View in Browser, Print, Save As..., Help or Close.

If you click View in Browser, it loads the Report into a local folder such as AppData/Local/Temp/PASSOLO/pslrep3705/Report.htm. And this has links such as, AppData/Local/Temp/PASSOLO/pslrep3705/$report_files$/page1.htm which will open just fine in your default browser.

If you click Save As.., it loads a Save As explorer window. Here you can search for a folder to save it into, and then choose your own filename to save it as.
If you choose a name such as "My Report 20201210" it will save the file as "My Report 20201210.htm" and will also create a folder called "My Report 20201210_files" that contains the page1.htm, page2.htm, etc.

The issue comes in the My Report 20201210.htm file. Because the file has spaces, and the folder has spaces, the HREF field needs to include %20 to indicate it is a white space. Or the code needs to be updated so that any white spaces are turned into _ marks.

Sample:
Current htm file - <a href=My Report 20201210_files/page1.htm>

Updated htm file - <a href=My%20Report%2020201210_files/page1.htm>

Alternative htm file - <a href=My_Report_20201210_files/page1.htm>

I use the alternative since it is easier then adding %20 all the time.