What steps will reproduce the problem?
1.All component for joomla 1.5 and elgg are installed and run i send form 
joomla tu elgg. I syncronize user from elgg to joomla
2.I'go in the joomla backend and i see all elgg user, in the joomla 
backend i dont'see any joomla users
3.Ok i try a login with login using jconnect. I try with a test user but i 
have "500 Internal Server Error

What is the expected output? What do you see instead?


What version of the product are you using? On what operating system?


Please provide any additional information below.