Woocommerce adding product issue – Not loading/Failing to add into "Categories"

Hi,

I have experiencing quite an unusual issue with woocommerce.

The issue can be explained below:

Uploading products which are to be applied to large quantities of “Categories” (20 or more) often when selecting the update button it updates however often the page stops loading & leaves me a on white page.

If I select the browser back button or select the “Products” tab I can see the item has been added however often it is not published due to the price not being applied along with not being added to all of those 20 categories.

If i go and reselect the additional categories and add a price then update the product is published and working fine.

Now If i duplicate this item the same process occurs white screen appears and stops loading along with not bringing over the price + all categories it only adds them at random.

WordPress running 4.1.1
Woocommerce version 2.3.8

Website: https://www.jdmaccessories.com.au