CROWD 2.1.0 is NOT java 1.5 compatible! This bug only occures when SSO is configured.

I decompiled the crowd-intergration-client-common-2.1.0.jar which constains the CrowdHttpTokenHelperImpl.buildCookie(CrowdHttpTokenHelperImpl.java:194)

See below:

private Cookie buildCookie(String token, String tokenCookieKey, CookieConfiguration cookieConfig)

{

String domain = cookieConfig.getDomain();

boolean isSecure = cookieConfig.isSecure();

Cookie tokenCookie = new Cookie(tokenCookieKey, token);

tokenCookie.setPath("/");

if ((domain != null) && (!domain.isEmpty()) && (!"localhost".equals(domain)))

{ tokenCookie.setDomain(domain); }

tokenCookie.setSecure(isSecure);

return tokenCookie;

}

String.isEmpty() cause the problem, this is Java 1.6 specific!

isEmpty

public boolean isEmpty()
Returns true if, and only if, length() is 0.
Returns:
true if length() is 0, otherwise false
Since:
1.6

If you look at the CROWD supported platforms page, it states that CROWD is compatible with JDK 1.5 (http://confluence.atlassian.com/display/CROWD/Supported+Platforms).