[Exist-open] package repo: can't install any packages (CentOS 6.2)

[Daniel S. <dan...@do...>]

Dear all,
I'm trying out the 2.0-tech-preview on a CentOS 6.2-box. Somehow I can't 
install any xar-packages from the Public exist-db repo. I access the 
admin-webapp as admin, retrieve the package-list from demo.exist-db.org, 
but clicking on the "Install" link of any of the packages results in an 
error like the following:

An error occurred while processing the action:
experr:EXPATH001 Package http://exist-db.org/apps/dashboard not found 
[at line 62, column 53, source: 
/usr/local/lib/exist/webapp/admin/repo.xqm] In function: 
repomanager:publicrepo() [176:17:/usr/local/lib/exist/webapp/admin/repo.xqm]

I checked the dependencies outlined in [1] – they seem fine. Actually 
the xar-files are downloaded and placed under db/system/repo/ but it 
looks like they are not accessible for the installer. Line 4425 from the 
attached exist.log reads:

Caused by: java.io.FileNotFoundException: 
http://localhost:80/exist/rest/db/system/repo/demo-0.1.xar
	at 
sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1401)
	at org.expath.pkg.repo.Repository.installPackage(Repository.java:199)

There’s also an reoccurring error "Permission denied to open collection: 
/db/system/security/exist/accounts" - maybe this is related?

I also tried the same with a fresh svn-checkout (rev. 17027) and got the 
same error, yet there I'm able to install packages from CXAN. As the 
same installer-jar works well on a AWS instance (OpenJDK 1.6.0_20) and 
on my local mac, I guess I'm probably missing something CentOS-specific 
here (I've no experience with this distro). Maybe someone has had 
similar issues or any hint what could be the cause to this?

Thanks in advance!
Regards,
Daniel

OS: CentOS 6.2
eXist Version:	2.0-tech-preview
eXist Build:	20120211
SVN Revision:	15855
Java:
Version:	1.6.0_24
Implementation:	OpenJDK Client VM
Installation:	/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0/jre


[1] http://exist-db.org/exist/repo/repo.xml#d6807e306