Fresh PS 1.7.4 install error: Undefined index: gb in

[babyewok]

OK so this is the first PS 1.7 version site I am installing and so far it has been a mega pain in the ****.  First I had some weird 500 error which was solved with this: https://www.prestashop.com/forums/topic/843402-500-internal-server-error/

Now it seems to be rearing its ugly head again,  I get through to installing the modules and get this error:

1. 1: HTTP 200 - parsererror - 
   Notice: Undefined index: gb in /home/..../modules/ps_themecusto/ps_themecusto.php on line 193
   
   Notice: Undefined index: gb in /home/..../modules/ps_themecusto/ps_themecusto.php on line 193
   {"success":true,"message":""}