I just received this reply from the developer Zucando


Answered about the Wishlist 2.0 for Zen Cart 1.5.x
If you do everything right, it will work fine.
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Zucando the developer sells install not plugins so my thoughts are they do not want this to work. They want you to pay them to install it. I would stay away from their plugins.

The readme file says to add a script into the tpl_product_info_display.php. If you look in the file downloads there is an example tpl_product_info_display.php with another script. The readme file does not say anything about merge the header file but again if you look into the files you will find a example file.


This plugin is intentionally made to not work and should be pulled by zencart.