im testing version MT 4.21OS on my site and when using the "sign in" widget and including it in the header-banner, i end up getting an invalid request after logging in and clicking my own name....signing in and signing out works ok but i am wondering why i cant access/edit my personal profile on this test blog? why would my name be linked if i can't edit it? it simply makes no sense...and accessing the "mt-comments.cgi" also brings an "invalid request error" too (on MT 4.21 pro, the name isnt even linked/highlighted (which is another variation).

ive spent the last few days testing out MT 4.21 pro and had to switch over to the open source version because of numerous bugs and glitches when switching styles/community blog versions (losing stylesheet codes, receiving 500 errors, instable/erratic userpic uploads which caused more 500 errors and core dump files)....i wanted to take advantage of the user sign in link at the very top of the page (via the professional website template), but instead am reverting back to the open source version...if anyone can help me with this issue, i will highly appreciate this.

the test blog is currently at: http://www.u2station.com/test_blog/

much thanks,

jonathan