Sorry but I have no other idea and I'm not familiar with the debian
package of XWiki.
May you can try to install the plantuml.war (you have to download it
from plantuml website) in your tomcat and then configure the macro to
use this "external" server.
Maxime
2012/8/19 Eugene Colesnicov <ecolesnicov(a)gmail.com>om>:
  I checked -  Tomcat security manager already is
disabled. As I said, XWiki
 installation I made from deb packages, which contains all nessesery soft &
 setups. Maybe another issue?
 On Sun, Aug 19, 2012 at 1:14 AM, Maxime Sinclair
 <maxime.sinclair(a)gmail.com>wrote;wrote:
  disable the security manager of Tomcat. 
 --
 Best Regards
 Eugene Colesnicov
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