Consistent to the new cmsms 2.0 style of creating templates, Selfregistration no
longer provides a $submit entry for the registration template. This breaks older
existing registration forms, as there no longer is a 'submit' button at the end
of the form. Thats something you don't necessarily expect nor spot, after a
module update.

I added the submit code from the orig_registratione1.tpl:

<input type="submit" name="{$actionid}sr_submit"
value="{$mod->Lang('submit')}"/>
<br/>
<a href="{module_action_url module=SelfRegistration action=default
mode=sendanotheremail}">{$mod->Lang('msg_sendanotheremail')}</a>

to fix the problem. 

regards
Ludger