File name issue (file names containing a comma will not play)

I have a couple of files that scrape OK but wont play. Renaming then re-scraping fixes the problem. The issue seems to be if the filename has a comma in it. Is this really an issue or am I missing something? I'd like to keep the filenames the way I have them which is

<series_name>.sXXeXX.<episode_name>

using the titles as they ahould be and keeping movies with the correct title rather than having to rename them to allow playback.

Is there anything I can do to stop commas being a problem? If not, can someone please at least explain why they cause a problem that cannot be fixed?

Thanks

Using XBMC 11 (stable build) for Windows on a machine running Windows 7 (64 bit) - not able to test other operating systems I'm afraid