I'm using oscommerce and STS for a while already. Recently i found out that when Google tries to crawl my pages, it returns a HTTP 500 error (internal server error). I checked my website (www.dollpoint.de) with the Live Headers Firefox extension and found out that i can see all pages but they all return the http status 500.
I also use the SEO-G extension. I first thought that would cause the problem but it doesn't. I can turn it off and the problem is still there. Only when i turn off STS, i get the http status 200. I also have the problem with different sts templates so it must be a problem of sts itself. Does anybody know where it could come from?