Environment:
JBoss Portal version 2.6.7.GA [downloaded it]
JBoss version 4.3.0.GA_CP03_EAP (build: SVNTag=JBPAPP_4_3_0_GA_CP03 date=200810241616)
[no database used by portal - yet]

OS: Linux 2.6.16.46-0.12-bigsmp (i386)

The problem:

I'm trying to add our own customized theme (based off a copy of industrial theme) to portal and created an ep-theme.war file containing:

ep\portal_style.css
ep\images\activeTab.gif
...snip...
ep\images\remove.gif
ep\images\view.gif
WEB-INF\portal-themes.xml

WEB-INF\portal-themes.xml contains:

<themes>
 <theme>
 <name>EP</name>
 <link rel="stylesheet" id="main_css" href="/themes/ep/portal_style.css" type="text/css"/>
 <link rel="shortcut icon" href="/themes/ep/images/favicon.ico"/>
 </theme>
</themes>

ep\portal_style.css is identical to industrial with the following change:

#logoName {
/* Original Logo...*/
 background-image: url( images/EPLogo.gif );

After dropping ep-theme.war in JBoss deploy directory, looking at the log files seems fine like with the exception that ThemeLink is creating or making links like "/ep-theme/themes/ep/..."

And, after configuring the page to use the new "EP" theme, I get no logo, a whole lot of blank space with the login/admin nav links.

Looking at the page source, I see that same "/ep-theme/" mangling of the URLs:

...
<link rel="stylesheet" type="text/css" id="main_css" href="/ep-theme/themes/ep/portal_style.css" />
<link rel="shortcut icon" href="/ep-theme/themes/ep/images/favicon.ico" />
...

This seems to be similar to a prior jira entry: https://jira.jboss.org/jira/browse/JBPORTAL-1105 but that shows resolved as of 2.6.