At last i installed it. i hope ir workd properly:

i access this page afther the crash
/administrator/index.php?option=com_comprofiler&task=showusers&view=showusers
it tells me that the installation hasn´t finish properly(image 1) and i can press a link and it will continue, i press the link. it told me that the installation was correct now but i cannot see the menu entry in the component.

i went to the discover option inside the installation modules and it appears community builder. i press install, appears a blank page, but now i can see the entry inside the component menu and it seems it works properly. there is sth wrong in the component.