Categories Block Bug

I have a bug with the categories block. CS-Cart support claims it’s based on the fact that mod_security is enabled on the server, but I don’t think so and my host won’t remove it. Is there anyone else running mod_security on their server who will verify whether or not they experience the same bug.

If I do the following steps, the categories will not assign to the block and nothing shows up on the front end.

  1. Go to Design > Blocks
  2. Click on Products
  3. Create a block assigned as “categories, manually, text links”
  4. Go to a product page in the admin panel, click on blocks
  5. Assign this block to the product (i.e. enable)
  6. Add 2nd or 3rd level categories to the block (1st level categories work ok)