List of newsletters not displayed

In debug mode i got the following message:
Fatal error: Unsupported operand types in /var/www/customers/vh-941/web/home/www.lehoczkilaura.hu/wp-content/plugins/wysija-newsletters/views/back.php on line 225

?

more info: i tested it on Chrome and Firefox. Same undesired result.
An older version of Wysija is working ok on an other site.

Is that possible that the newset release of Wysija is buggy?

les’s say, half-result…

I browsed the “campaigns” from my browser history, and on the page opened i found the list of campaigns listed!

Almost got happy.
But after i opened for edit the campaign i was working on yesterday then i had to see that although i saved it as draft now only the basic template is shown to me as my campaign designed so far… So all my work got lost.

What to do different next time in order to avoid such situation?

aarrrgh
lost again
the “Back to edit button” makes something
after creating the newsletter and clicking next, and then on page 3 clicking “back to edit” i arrive back to a blank template. All my work is lost again!

if you try the save as draft, and then edit again you got a message saying that drafti is saved, but really not saved.
After clicking edit, you get the basic template again!
This may totally prevent user from creating newsletter.

I have got the patch by email, thank you, Support!