Thanks for the reply.
Yes, this updated line 65 works for me:
var expired = now - admeta[2];
My impressions stats are now counting like before.
Similar issue with my ads impressions stats dropped dramatically. Maybe my finding (see my latest full post) is related to your issue.
In the AdRotate JS library file (jquery.groups.js), the gslider function attempts to access a 4th value to calculate the impression timer:
Line 65:
var expired = now - admeta[3];
Because admeta[3] is undefined (since the array only goes up to index 2), causing the script to completely bypass the $.post AJAX call to track the impression.
I think you can change the line to var expired = now - admeta[2]; while waiting for a fix. It worked for my – impressions stats are back!