Xwiki deployment issues

Hi, Intially I tried integrating Xwiki with MS SQL Server. But it didn't worked due to datatype limitation. I created a copy of xwiki.hbm.xml & configured accordingly to hibernate config. Though it created the tables, later there were data insertion issues. So now I had switched to MySql. I had updated my svn repository svn://sanjayjaiswar@svn.forge.objectweb.org/svnroot/xwiki/xwiki/branches/XWIKI_WYSIWYG_NEWARCHI & executed the ant from command prompt at <XWIKI_HOME> The war was build into release directory. I extracted all files to a directory xwiki & deployed it to the tomcat webapp. MySql Installed. Created xwiki database, granted all privileges. Invoked wiki home from localhost, then http://localhost:8080/xwiki/bin/view/Main/WebHome There were Graphviz software related errors. I installed the software, that were resolved. ISSUE 1) Register is not working. Also cannot loging using (Admin/admin) 2) How to work in development environment? Don't you have the hot deployment? Please guide me to start with xwiki as a developer (not a user) ECLIPSE CONSOLE LOG 12:58:51,668 ERROR http-8080-Processor18 http://localhost:8080/xwiki/bin/view/Main/WebHomeSimpleLog4JLogSystem:logVe… - Left side ($objuser.getProperty("usertype").value) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible. [line 10, column 66] 12:58:52,028 ERROR http-8080-Processor18 http://localhost:8080/xwiki/bin/view/Main/WebHomeSimpleLog4JLogSystem:logVe… - Left side ($!hidecolumns) of '==' operation has null value. If a reference, it may not be in the context. Operation not possible. [line 9, column 21] 12:58:52,121 WARN http-8080-Processor20 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/style.cssMonitorData:l… - MONITOR skins.xwiki10b1: 0ms 12:58:52,153 WARN http-8080-Processor25 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/elements.cssMonitorDat… - MONITOR skins.xwiki10b1: 16ms 12:58:52,153 WARN http-8080-Processor21 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/classes.cssMonitorData… - MONITOR skins.xwiki10b1: 16ms 12:58:52,153 WARN http-8080-Processor17 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/xwiki.cssMonitorData:l… - MONITOR skins.xwiki10b1: 16ms 12:58:52,168 WARN http-8080-Processor24 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/rss.cssMonitorData:log… - MONITOR skins.xwiki10b1: 31ms 12:58:52,168 WARN http-8080-Processor19 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/page.cssMonitorData:lo… - MONITOR skins.xwiki10b1: 31ms 12:58:52,184 WARN http-8080-Processor20 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/microformats.cssMonito… - MONITOR skins.xwiki10b1: 47ms 12:58:52,184 WARN http-8080-Processor22 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/wiki.cssMonitorData:lo… - MONITOR skins.xwiki10b1: 47ms 12:58:52,184 WARN http-8080-Processor21 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/colorsblack.cssMonitor… - MONITOR skins.xwiki10b1: 31ms 12:58:52,199 WARN http-8080-Processor25 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/presentation.cssMonito… - MONITOR skins.xwiki10b1: 46ms 12:58:52,262 WARN http-8080-Processor18 http://localhost:8080/xwiki/bin/view/Main/WebHome MonitorData:log:183 - MONITOR Main.WebHome: 781ms 12:58:52,262 WARN http-8080-Processor18 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/screenlayout.cssMonito… - MONITOR skins.xwiki10b1: 0ms 12:58:52,293 WARN http-8080-Processor17 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/style.cssMonitorData:l… - MONITOR skins.xwiki10b1: 15ms 12:58:52,403 WARN http-8080-Processor24 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/header-bg.jpgMonitorDa… - MONITOR skins.xwiki10b1: 16ms 12:58:52,403 WARN http-8080-Processor22 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/actionbar-bg.pngMonito… - MONITOR skins.xwiki10b1: 0ms 12:58:52,403 WARN http-8080-Processor19 http://localhost:8080/xwiki/bin/skin/skins/xwiki10b1/headerperso-bg.jpgMoni… - MONITOR skins.xwiki10b1: 0ms Thanks, Sanjay