Why are the Product Pages from the backend not loading when trying to edit?

Please note that this is a temporary solution, and our Dev team is continuously working on how to resolve this problem in the near future.

Basically, this issue is only happening on products that have Cross-Sell items. What you have to do at the moment is delete the Cross-Sell, perform your edit, and add the Cross-Sell Product again.

Steps:

Go to the Catalog Menu, then Products
Navigate to the product where you would like to edit (In this case 24487248).
Click the Products icon (looks like a box).

Take note of the Product that is assigned as a Cross-Sell, we suggest that you copy-paste it on a notepad or copy-paste the Part number as it will be needed later.

In this example, from our WSM Demo Page, the cross-sell product is: Factor 55 Hawse Fairlead 1 Inch Thick Gun Metal Gray Factor 55 00016-, this is the info we need to copy as highlighted in yellow:

Delete the Cross-Sell Product by clicking the X icon, and selecting OK on the popup:
Go back to the Product Screen and click on the pencil icon, you will see now that the Editing page will come up:

Make the changes you need and click "Save Changes" from the bottom right corner:
Click the Products icon again from the Product you were editing so you can add the Cross-sell again.

Click Add Product button.
Type the part id or paste the information that was previously copied into the product field.
Once you have pasted the information, use your backspace key to remove the last character from the pasted information (if this is a number keep it in mind)
Click the product from the generated list

Click the Add Cross-Sell Product Button.