I've *always* had to do the following after an import from Apsona to get round the "categories showing but product names blank" issue.

Before you do this: BACKUP THE DB! Also, we don't use any custom sort order on attributes etc so if this matters to you

TOOLS > STORE MANAGER (store_manager.php)

Click the following buttons in this order:

Update All Products' Attribute Sort Orders
Update ALL Products Price Sorter
Reset ALL Products Master Categories ID
and finally
Optimize Database

It might be co-incidence, but it also seems to speed up the store a fair bit by doing that.

Let me know if this works!