
Their graphing module was bought from some third party, and is terrible, and buggy, and doesn't give you the basic sorts of options that anyone who's ever had a Technical Communication class demands. In order to get any sort of graph that was remotely worthy of including in a report we always had to export node or link data to a text file, import to Excel, and do our own graphs by hand. The two major drawbacks I see with XP are the cost, which is exorbitant, and the data presentation, which is generally horrid. Can't answer either, but I've been an XP-SWMM user for most of the last decade, and I can say that XP-SWMM stability issues have gone away, provided you're not working with a model that's been "upgraded" through three or four versions, or has been subject to a lot of data imports from nefarious sources.
