Which version of the jquery and jquery-ui plugin are you using? Can you see any javascript errors when you open a console (Firebug/Chrome)? What browser are you using? Could you send me the JSON representation of 0.7 and 0.8?

I just realized the jquery-ui plugin was marked as optional dependency in the pom. Could you try installing and check if it works then?

I have the same issues, I added the jquery-ui plugin and the console outputs the following related to the dep graph,

Uncaught TypeError: Cannot read property 'left' of null jquery.jsPlumb-1.3.9-all-min.js:1
ax jquery.jsPlumb-1.3.9-all-min.js:1
ad jquery.jsPlumb-1.3.9-all-min.js:1
connect jquery.jsPlumb-1.3.9-all-min.js:1
(anonymous function) jsPlumb_depview.js:90
e.extend.each jquery.min.js:2
(anonymous function) jsPlumb_depview.js:84
o jquery.min.js:2
p.fireWith jquery.min.js:2
w jquery.min.js:4
d jquery.min.js:4

The offending line being,

var bA = ah[this.sourceId], bz = ae[this.sourceId], bv = ah[this.targetId]...bJ = this.endpoints[0].anchor.compute({xy: [bA.left, bA.top]

this.sourceId and this.targetId are undefined.

Which version of the plugin are you using? It seems to be 0.7, since 0.8 ships with jquery.jsPlumb-1.3.16-all-min.js. If it is 0.7 then this is a known problem (JENKINS-15850) and should be fixed with 0.8.

oops, yep, it was 0.7, 0.8 fixed it.

Code changed in jenkins
User: Stefan Wolf
Path:
pom.xml
http://jenkins-ci.org/commit/depgraph-view-plugin/ab81e0a9d0766e854099048fffe8a563c3c63f73
Log:
[FIXED JENKINS-15891] by making jquery-ui mandatory

Compare: https://github.com/jenkinsci/depgraph-view-plugin/compare/cb2210ba013b...ab81e0a9d076

Ok, installing the UI plugin fixed the problem!