VM3 issue with Virtuemart Admin Section

[advergroup]

I am using Virtuemart 3.04 and Joomla 3.3

Why does my Virtuemart Product pages look different in the admin section?   

ON this particular site (IMAGE 1) there are no tabs in the admin section when viewing a product.

On all other VM sites the ADMIN PRODUCT PAGE shows tabs to select from PRODUCT INFO - PRODUCT DESCRIPT - PRODUCT WEIGHT - PRODUCT STATUS - IMAGES - CUSTOM FIELDS?

This is an issue mainly because the Custom Fields will not allow adding to items.   

[jenkinhill]

I'd guess an install error rather than a js conflict. You can reinstall without losing any data.