Inherited Probelm RevSlider Issue

Hello all,

I have inherited a problem that has been born by negelect it seems. The website was setup a while ago by others and has never really been maintained. I ended up getting the uneviable task of fixing a contact form, but couldn’t log in properly caused by an old plugin.

I have disabled them and since managed to log back in but cannont reactivate the old RevSlider version that cause the original issue, I get the error message below :

Fatal error: Uncaught Error: [] operator not supported for strings in /home/customer/www/envirosound.co.uk/public_html/wp-content/plugins/revslider/includes/framework/base-admin.class.php:71 Stack trace: #0 /home/customer/www/envirosound.co.uk/public_html/wp-content/plugins/revslider/admin/revslider-admin.class.php(552): RevSliderBaseAdmin::addMetaBox('Revolution Slid...', '', Array, NULL) #1 /home/customer/www/envirosound.co.uk/public_html/wp-content/plugins/revslider/admin/revslider-admin.class.php(73): RevSliderAdmin->addSliderMetaBox() #2 /home/customer/www/envirosound.co.uk/public_html/wp-content/plugins/revslider/admin/revslider-admin.class.php(44): RevSliderAdmin->init() #3 /home/customer/www/envirosound.co.uk/public_html/wp-content/plugins/revslider/revslider.php(165): RevSliderAdmin->__construct('/home/customer/...') #4 /home/customer/www/envirosound.co.uk/public_html/wp-admin/includes/plugin.php(2288): include_once('/home/customer/...') #5 /home/customer/www/envirosound.co.uk/public_html/wp-admin/plugins.php(192 in /home/customer/www/envirosound.co.uk/public_html/wp-content/plugins/revslider/includes/framework/base-admin.class.php on line 71

It seems from googling so far that it is something to do with it referring to a string not an array, but i haven’t really got sufficient understanding to correct it and not found an exact equivalent. Is it possible to make a modification to the code to allow it to be reavtivated and return the sliders and images in the short term.

Many thanks !