For whatever reason, all of a sudden I can’t add products to orders I create in the backend of my site running Magento 1.7.0.2. I’ve tried everything I could think of (disabling APC, javascript merging turned off, mod pagespeed turned off, no compilation, disabled caching, etc...).
In Chome's Java debugger I do see a lot of DOMExceptions being thrown when I try to create a new order and add products.
Specifically line 3334 in contentscript.js
var c = window.getSelection().getRangeAt(0).cloneContents().textContent;
Throughout the rest of the order creation process I get some in prototype.js and jquery.main.js I’m not sure if these are intended or shouldn’t be thrown. They are in try/catch blocks.
This is really a big pain especially since I have no idea why it just seemingly randomly stopped working. I haven't installed any new extensions and I've tried disabling all the extensions I have.
I've also seen Magento - Cannot add products to a manual order within backend of the Admin Panel which has the same problem but I guess a different solution since I tried replacing prototype.js with the one included in the Magento 1.7.0.2 files. I've never modified the js files.