Core svn revisions: 27583 and 27739.

Steps to reproduce:

1) load a page with a table of FCS files in a particular run, URL is of the form:

<labkey_root>/flow-run/<container>/showRun.view?runId=<integer>

2) on the grid's menu click "View" -> "Customize view"

for the production-type server one gets:

GET https://immunespace.org/images/elbow-minus-nl.gif 404 (Not Found) ext-base.js:21
Ext.lib.Dom.getXY ext-base.js:21
Ext.lib.Dom.getY ext-base.js:21
Ext.Element.addMethods.getY ext-all.js:21
L ext3.min.js:1
LABKEY.DataRegion.Ext.extend._showButtonPanel ext3.min.js:1
LABKEY.Query.getQueryDetails.success ext3.min.js:1
(anonymous function) core.min.js:1
Ext.apply.callback ext-all-sandbox.js:21
Ext.define.onComplete ext-all-sandbox.js:21
Ext.define.onStateChange ext-all-sandbox.js:21
(anonymous function) ext-all-sandbox.js:21


and for the development-type server one gets:

GET http://dhcp157039.fhcrc.org:8080/labkey/images/elbow-minus-nl.gif 404 (Not Found) ext-base-debug.js:1780
Ext.lib.Dom.getXY ext-base-debug.js:1780
Ext.lib.Dom.getY ext-base-debug.js:1755
Ext.Element.addMethods.getY ext-all-debug.js:3124
callback DataRegion.js:1574
LABKEY.DataRegion.Ext.extend._showButtonPanel DataRegion.js:1644
LABKEY.Query.getQueryDetails.success DataRegion.js:1729
(anonymous function) Utils.js:391
Ext.apply.callback ext-all-sandbox-debug.js:6430
Ext.define.onComplete ext-all-sandbox-debug.js:37298
Ext.define.onStateChange ext-all-sandbox-debug.js:37259
(anonymous function) ext-all-sandbox-debug.js:1823