Problems to use ?Changepassword

I’m trying to test custom web forms Login/Change password, etc – I configured them in domcfg.nsf on my test machine. I just changed the look without modifying any of the fields. Login works fine. Change password form also shows up fine – I add ?Change password to my url (I also tried simply /names.nsf?ChangePassword). In both cases my custom form comes up, I can enter passwords and submit it. However I get back:

HTTP Web Server: Lotus Notes Exception - The server is not responding. The server may be down or you may be experiencing network problems. Contact your system administrator if this problem persists.

On server console there is an additional message [/names.nsf?ChangePassword]

I’ve searched around and found only this one post, without a valid response:

http://www-10.lotus.com/ldd/nd6forum.nsf/0/74ad63aca2b8ddf285256d9f00505a82?OpenDocument

Strangely enough on another server the same form works without problems, so the problem does not seem to be in my modifications.

Subject: problems to use ?Changepassword

Did you ever find a solution? I am having the same problem.Thanks