Import test case in RQM using RQMUrlUtility

I'm trying to import a test case in RQM using RQMUrlUtility.
I received the following message:

RQMUrlUtility: Connected to https://ratll001.siassb.local:9443 using project "REG"
java.security.NoSuchAlgorithmException: SSL_TLS SSLContext not available
Unable to create SSL_TLS context, trying SSLv3
11-apr-2011 14.31.54 org.apache.commons.httpclient.HttpMethodDirector isRedirect Needed
INFO: Redirect requested but followRedirects is disabled
RQMUrlUtility: Calling method to upload XML from a specified file to URL
RQMUrlUtility: Server Response code: 500
11-apr-2011 14.31.54 org.apache.commons.httpclient.HttpMethodBase getResponseBody
AVVERTENZA: Going to buffer response body of large or unknown size. Using getResponseBodyAsStream instead is recommended.

So import failed.
I tried to import the same test case in another project area and the import was fine. My account has the same permissions in both project areas.
Anyone can give me a suggestion?

Thanks in advance.
Alessandro.