[Cdash] Freeze problem with custom measurement

[ycollette.nospam at free.fr]

Hello,

I use svn trunk of cdash (revision 3551).
I visualize a custom measurement. The web address is http://cdash.myaddress.lan/cdash/testDetails.php?test=25356&build=53
Up to now, everything is OK.
When I click on the "Build:" link at the top of the page (going to the web page: http://cdash.myaddress.lan/cdash/buildSummary.php?buildid=53) the page freezes. I need to reload the page to have the "Build:" page loaded.
In the apache2 log, I see the following message:

[Tue Aug 26 11:02:09 2014] [error] [client 192.168.0.53] PHP Notice:  Undefined index: export in /var/www/cdash/ajax/showtestmeasurementdatagraph.php on line 93, referer: http://cdash.myaddress.lan/cdash/testDetails.php?test=25356&build=53

Best regards,

YC