Weird GZ Doom Build config error message

[Pan]

I downloaded GZ Doom Builder on a new laptop, updated my .net framework, downloaded the old version of Direct X needed to run GZ Doom builder......and I get a cascade of configuration error messages. See below;

 

 

Does anyone know what 'Invalid assignment. Missing a previous terminator symbol' means?

 

When I exit out of the above window I get the below message;

 

 

I then go into my game configuration menu and I get this;

 

 

Everything is greyed-out and I can only click on OK or Cancel. I tried dragging Doom2.wad directly in but it doesn't allow that either.

 

Any help would be much appreciated! I have searched the forums and it seems no one has had this type of config issue before. I checked my GZ Doom Builder folder and all the configuration files are there too, nothing appears to be missing. 

[Pan]

Problem solved with a fresh download. The config files somehow got corrupted in the first download.