In 0730510: Fixes #4687 Initializes the row values so this works without errors even in this edge case. I couldn't easily reproduce this error in a test, so just fixing the bug as is.

mattab: Sorry, I dont have a working dev env (yet) - Can you pl. accept my below patch as a one-off. Thanks.

I had the same issue, but the patch applied did not work. I had to move it a few lines up, and add some more enums to the list to work:

Basically remove the existing patch, and apply the below code to line no 102 of core/DataArray.php
-------------8<-----------------------------------------8<---------------------
// In case the existing Row had no action metrics (eg. Custom Variable XYZ with "visit" scope)
// but the new Row has action metrics (eg. same Custom Variable XYZ this time with a "page" scope)
if(!isset($oldRowToUpdate[Metrics::INDEX_MAX_ACTIONS])) {
$toZero = array(Metrics::INDEX_NB_VISITS,
Metrics::INDEX_NB_ACTIONS,
Metrics::INDEX_NB_UNIQ_VISITORS,
Metrics::INDEX_MAX_ACTIONS,
Metrics::INDEX_SUM_VISIT_LENGTH,
Metrics::INDEX_BOUNCE_COUNT,
Metrics::INDEX_NB_VISITS_CONVERTED);
foreach($toZero as $metric) {
$oldRowToUpdate[$metric] = 0;
}
}
-------------8<-----------------------------------------8<---------------------

can you please follow instructions at: http://forum.piwik.org/read.php?2,109735,page=1#msg-109779

and then post the message you are getting after making the patch from this forum post?
Thanks!

matt: Strange thing - am unable to reproduce the bug - Even without the patch! Is there some kind of indexing that might be at work?

I even tried adding more data, just in case it was caching at work - but I see the new goals taking place, but not able to reproduce the error!

What gives?

to reproduce you would have to re-process the data: How do I force the reports to be re-processed from the logs?

please reopen the ticket, with full error message (using latest 2.1RC), if you can reproduce. cheers