Exception in thread "Thread-62" java.lang.IllegalArgumentException: Host name may not be null

Have a session that locks up trying to validate a proxy.
Error is: Exception in thread "Thread-62" java.lang.IllegalArgumentException: Host name may not be null

This same session works file on local systems as well as out other server.

I've reinstalled Screen Scraper and updated to the latest beta.
Standard server install script no modifications.

Stderror.log shows this:
Exception in thread "Thread-62" java.lang.IllegalArgumentException: Host name may not be null
at org.apache.commons.httpclient.HttpHost.(HttpHost.java:68)
at org.apache.commons.httpclient.ProxyHost.(ProxyHost.java:64)
at org.apache.commons.httpclient.HostConfiguration.setProxy(HostConfiguration.java:415)
at com.screenscraper.util.ProxyServer.validate(ProxyServer.java:277)
at com.screenscraper.util.ProxyServerPool$ProxyServerValidator.run(ProxyServerPool.java:1572)

Seems to be a Java library issue.
Any suggestions on how to track this down and set the library to the needed version?

It looks like you have a

It looks like you have a scrapeableFile where the URL, or part of it, is set with a session variable, and that session variable may be null. Do you have a way to confirm that?