Hmm.... Well, that brings up some issues for me.
If I have to tell it where to go, it's not really crawling my website and looking for the pages on the server. This is more of a link indexer. I've found plenty of free (and actual) sitemap crawlers where I give it a starting directory and it finds all the pages on the server in any and all subdirectories, but they don't create the xml files that I need - which is the sole reason I purchased the script.
Going past that issue, I used one of those sitemappers and saved the file as a php page to use as a starting address and uploaded that file to the server. Then, I used your SE bot simulator and gave it the file and yes, it found the page and files, but only a fraction of them. I'm assuming that you have a limit set on the free tool - but at this point, I'm unsure if you do or if it just doesn't find them all.
Going past that issue, I then used my purchased copy to try and "crawl" my site using the file I created (as mentioned above). The script just hangs up at this point:
Please wait. Sitemap generation in progress...
It never actually creates any pages or sitemaps.
Given all of this, I'm a bit disappointed in what could have been a very useful tool. The script doesn't crawl a website (language used on your site), it spiders it - meaning you have to tell it where to go or it gets lost. That doesn't work for me. I'll be adding another 300 directories/sub-directories and another 300,000 pages on the server and they are not linked together so spidering software isn't going to be a solution for me. I spend my time creating the pages, I don't have time to give a spider instructions on where to go.
Another question I'd pose is this...
Given the fact that your script requires directions on where to go and what to look for and given the fact that most webmasters don't have time to write out a "map" so your spider doesn't get lost - why would you not include a secondary script (freely available on the net) and incorporate that script into yours so a map can be generated first and then used as instructions on where to go for your spider for sites such as mine that has hundreds of thousands of pages that are not linked together?