On Oct 14, 2013, at 12:09 PM, Eric Jonzeck <jonzeck(a)lieferando.de> wrote:
  Hey there,
 hier you can see all jar-files in the WEB-INF/lib-directory. The only file
 with "oldcore" is "xwiki-platform-legacy-oldcore-5.2.jar":
  
[snip]
  -rw-r--r-- 1 root root  2859768 Okt  7 16:42
 xwiki-platform-legacy-oldcore-5.2.jar 
Indeed, this is the correct one and the size looks ok. You could check its content with
"jar tvf xwiki-platform-legacy-oldcore-5.2.jar | grep RegisterAction" but
I'm sure it'll be there…
Maybe you could provide us with the full logs and attach them somewhere (pastebin, gist,
etc)?
[snip]
Thanks
-Vincent
  Regards,
 Eric
 -----Ursprüngliche Nachricht-----
 Von: users-bounces(a)xwiki.org [mailto:users-bounces@xwiki.org] Im Auftrag von
 Vincent Massol
 Gesendet: Montag, 14. Oktober 2013 11:55
 An: XWiki Users
 Betreff: Re: [xwiki-users] HTTP Status 500 @ Register-Page on fresh
 installed xwiki 5.2
 Hi Eric,
 On Oct 8, 2013, at 11:49 AM, Eric Jonzeck <jonzeck(a)lieferando.de> wrote:
  Hey guys,
 i run into an exception on my newly installed xwiki after klicking the
 register-button:
 HTTP Status 500 -
 _____
 type Exception report
 message
 description The server encountered an internal error () that prevented
 it from fulfilling this request.
 exception
 javax.servlet.ServletException: Servlet execution threw an exception 
 [snip]
  root cause
 java.lang.NoClassDefFoundError: Could not initialize class
 com.xpn.xwiki.web.RegisterAction 
 This is the error. It means you're missing some JAR in the XWiki's
 WEB-INF/lib directory.
 Namely the xwiki-plartform-*oldcore*.jar
  note The full stack trace of the root cause is
available in the Apache
 Tomcat/6.0.35 logs.
 Do you have any idea why? I installed it via aptitude on my ubuntu
 12.04 x64. 
 Not sure what went wrong. I've never installed XWiki this way myself. I'll
 let those with more experience chime in.
 Thanks
 -Vincent