Problem:

When running a Horizontal Geometry Report (or any geometry report), I am getting question marks (??) instead of a plus sign (+) for the station delimeter?

Solution:

In the Bentley Civil Report Browser, go to Tools>Format and make sure the Station Delimeter is set to +.  In some cases, this field can be set to an unrecognized character (example in the image below.)   Changing the delimeter to + will resolve the issue.