Hi Thiago,
Here is the console... after I induce the NPE.
2013-05-13 16:11:14.622:INFO:oejs.Server:jetty-7.6.0.v20120127
2013-05-13 16:11:22.970:INFO:oejpw.PlusConfiguration:No Transaction manager
found - if your webapp requires one, please configure one.
2013-05-13 16:11:23.424:INFO:oejsh.ContextHandler:started
o.m.j.p.JettyWebAppContext{/,file:/C:/Prototype/Mavenized/Product/tynamo/trunk/tynamo-examples/pphl/src/main/webapp/},file:/C:/Prototype/Mavenized/Product/tynamo/trunk/tynamo-examples/pphl/src/main/webapp/
2013-05-13 16:11:29.726:INFO:oejs.AbstractConnector:Started
SelectChannelConnector@0.0.0.0:8080
[INFO] Started Jetty Server
127.0.0.1 - - [13/May/2013:20:11:34 +0000] "GET /pphl/login HTTP/1.1" 200
3301 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101
Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/default.css HTTP/1.1" 200 2089
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/css/k-structure.css HTTP/1.1"
200 990 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/tree.css HTTP/1.1" 200 570
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/t5-alerts.css HTTP/1.1" 200 386
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/tapestry-console.css HTTP/1.1" 200 322
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/form.css HTTP/1.1" 200 77
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/css/library.css HTTP/1.1" 200
137 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/facebook/components/fb-button.css HTTP/1.1"
200 1395 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1;
WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/tap-jquery/tapestry.js HTTP/1.1" 200 1739
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/openid-0.2.1-SNAPSHOT-1367865189000/components/button.css
HTTP/1.1" 200 1429 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/ui_1_8_24/jquery.ui.widget.js
HTTP/1.1" 200 2344 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/ui_1_8_24/jquery.ui.core.js HTTP/1.1"
200 3439 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1;
WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/ui_1_8_24/jquery.ui.position.js
HTTP/1.1" 200 2772 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/jquery.effects.show.js HTTP/1.1" 200
105 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/ui_1_8_24/jquery.effects.highlight.js
HTTP/1.1" 200 608 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/jquery.json-2.2.js HTTP/1.1" 200 1930
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/ui_1_8_24/jquery.effects.core.js
HTTP/1.1" 200 5436 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/t5-spi.js HTTP/1.1" 200 1113
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/t5-jquery.js HTTP/1.1" 200 771
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/underscore_1_3_3.js HTTP/1.1" 200 10511
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/t5-init.js HTTP/1.1" 200 609
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/t5-pubsub.js HTTP/1.1" 200 2362
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/t5-events.js HTTP/1.1" 200 892
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/t5-core.js HTTP/1.1" 200 925
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/t5-dom-jquery.js HTTP/1.1" 200 1805
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/t5-console-jquery.js HTTP/1.1" 200
1108 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/t5-ajax-jquery.js HTTP/1.1" 200 2285
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/k-theme0.css
HTTP/1.1" 200 17510 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/t5-alerts-jquery.js HTTP/1.1" 200
1265 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/jquery_core/jquery-1.7.2.js HTTP/1.1"
200 73890 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1;
WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/t5-formfragment.js HTTP/1.1" 200 915
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/t5-tree-jquery.js HTTP/1.1" 200 1458
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/tapestry-messages.js HTTP/1.1" 200 846
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/core/tapestry-console.js HTTP/1.1" 200 500
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/validation.js HTTP/1.1" 200 2477
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/twitter/components/sign-in-with-twitter-d.png
HTTP/1.1" 200 3306 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/federated/base/OauthSignIn.js HTTP/1.1" 200
317 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/openid-0.2.1-SNAPSHOT-1367865189000/components/google-icon.png
HTTP/1.1" 200 1996 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/img/k-theme0/bg_required.png
HTTP/1.1" 200 1111 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/tapestry-jquery.js HTTP/1.1" 200 9396
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/tapestry-beanvalidator-jquery.js
HTTP/1.1" 200 429 "http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT
6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/PTS55F-webfont.woff
HTTP/1.1" 200 25531
"http://localhost:8080/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/k-theme0.css";
"Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/ctx/images/secure1.jpg HTTP/1.1" 200 5121
"http://localhost:8080/pphl/login"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/PTS75F-webfont.woff
HTTP/1.1" 200 24423
"http://localhost:8080/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/k-theme0.css";
"Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/Novecentowide-Medium-webfont.woff
HTTP/1.1" 200 22019
"http://localhost:8080/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/k-theme0.css";
"Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:38 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/Novecentowide-Book-webfont.woff
HTTP/1.1" 200 19396
"http://localhost:8080/assets/1.0-SNAPSHOT-1368475842243/kawwa2_asset/theme/css/k-theme0.css";
"Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101 Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:39 +0000] "GET /pphl/query HTTP/1.1" 500
8341 "-" "Mozilla/5.0 (Windows NT 6.1; WOW64; rv:19.0) Gecko/20100101
Firefox/19.0"
127.0.0.1 - - [13/May/2013:20:11:42 +0000] "GET
/assets/1.0-SNAPSHOT-1368475842243/jquery/exceptiondisplay-jquery.js HTTP/1.1"
200 588 "http://localhost:8080/pphl/query"; "Mozilla/5.0 (Windows NT 6.1; WOW64;
rv:19.0) Gecko/20100101 Firefox/19.0"
