7.6.3 campaign wizard blank screen

I upgraded to 7.6.3. I have existing campaigns. When I open the new wizard for any of them, I get the chevron buttons across the top of the window. If I click on Target List or Campaign Header, the screen goes blank.

The error_log file shows

[27-May-2016 01:12:29 America/New_York] PHP Fatal error: Call to a member function get_entry_count() on a non-object in /home/teamscor/public_html/suitecrm/modules/Campaigns/WizardNewsletter.php on line 478

If I open the campaign outside of the wizard, I can see the target lists.

Has anybody seen this?

Thanks.

I have the exact same problem, has anyone fixed this issue ?

Ok, 2 known instances. Any others? Is this a bug?

If anybody is interested, I upgraded to 7.6.4 and the same problem exists…

We are experiencing the same problem

I’ve reverted back to my backups and restored suitecrm to those files. Seem’s to fix the blank screen issue. So it’s the latest files causing the break

Which version did you revert back to?

The same problem at version 7.6.4

You can try this fix https://github.com/gymad/SuiteCRM/commit/2ddc7d5f0e5cc78078a82a8923808dd1599b9dfd
more info at:
https://github.com/salesagility/SuiteCRM/issues/1557

Thanks. That did the trick. Simply replace those 2 lines in the file modules/Campaigns/WizardNewsletter.php