SOAP login() method returns nothing?

[mysticone]

I've been working on developing some site integration tools for a friend of mine. I've been trying to interface their portal website with an installation of SugarCRM 4.5.1c. I had everything working fine on my test machine with SugarCRM 4.5.1e, but on moving to their machine, my SOAP login methods all return ... well, nothing. If I do a var_dump($result) where $result is the result of the SOAP client's login method, it just says NULL. The account is valid, no errors are being raised, and nothing is coming back. I'm stumped as to what the problem could be.

I've looked over the release notes for the versions up to 4.5.1e, but didn't see anything that seemed to be related to logins or SOAP. I'm using php5 on the server (5.2.3), Apache 1.3.37, MySQL 5.0.45, SugarCRM Open Source 4.5.1c (as mentioned previously), and the nuSOAP library that's included with SugarCRM.

If anyone could point me in the right direction, I'd greatly, greatly appreciate it. I'm stumped. Thank you!

Daniel

[mysticone]

Actually, let me clarify something here. It's returning "false", rather than returning nothing. The null comes from when I'm attempting to pull the session ID from the resulting array, but it isn't an array. So my request is returning "false" instead.

[Maskus]

I am having the same issue. Has anyone solved it?
Logs and googling do not help.