it looks like a bug which hits one when using uppercase characters in group names, with lower case I get the web page and I don’'t see this exception in admin-console.log:
java.lang.NullPointerException
at java.net.URLEncoder.encode(URLEncoder.java:186)
at org.jivesoftware.wildfire.admin.group_002dedit_jsp._jspService(group_002dedit_jsp.java:374)
at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:94)
Well, for me it throws that error for every group (even with lower case names). Have just tried to create new group and it works fine even with upper case char in its name.
I might have just fixed this issue in SVN. The only non-safe URLEncoder call I could find was for the group description (it could be null). I can’'t find any other issues – can you guys check out a nightly build and let me know if the issue is gone?