I checked my google webmaster tools and have over 2000+ crawl errors from June 1 - 18 and I'm trying to fix them. Most have stopped but I'm still trying to minimize existing crawl errors as well. Most are 404 errors.
I've attempted to do htaccess do 301 redirects but because the error links are dynamic it won't register. I've also created a disallow link ([url removed, login to view]) to stop those links but I'm not sure what else I can do.
I'm not too concerned but I would like to have this resolved asap.