Module development and code questions

I have just installed drupal, and tried to install a first module for it (taxonomy ticker).
Following the readme file of module I did all the steps. And i get this massage now on the top of my site:

warning: join(): Bad arguments. in C:\Sonia\WEB\Apache2\htdocs\drupal\modules\taxonomy_ticker\taxonomy_ticker.module on line 28.

I'm working on a module that needs to handle content in an interesting way, and I'd like some feedback about a good way to implement it. For this example, let's say that the content I'd like to organize is food.

I want to be able to create food as content and have a page about each food that gives an overview of that food (nutrition facts, tasteyness, ect.). I want this peice of content to be categorized by its type--like meat or dairy. Simple so far, but here is the catch. I want to be able to add categories "underneath" each peice of food content. For example, a news category with the latest headlines about beef.

I also would like to be able to have a higher catergory for all meat products. So there would be news about all meat in general, and then news about the specific type of meat, 'beef'.

It would have to scale to support thousands of food items.

• Dairy
  • Milk
    • News
  • Eggs
    • News
  • News
• Drink
  • Soda
    • News
  • News
• Meat
  • Beef
    • News
  • Chicken
    • News
  • Lamb
    • News
  • News

What is the best way to implement this type of taxonomy system?

Alright I'm somewhat of a drupal newb (just installed it 3 days ago), but I'm learning quick and its amazing how quickly my site has been coming together. Anyways back to my issue.

When I try to create a new story or page node (this is at the submit pages for these each of the nodes), I get the following errors.

Hi,

I am using "book page" module as Events posting module on my site. That is, the events organised by my organisation are published on the site using "book page" module. The thing is we already have pre-registered group of people. The list is available in civicrm module (also in excel file). I want these people to be registered people of one event. But i dont know how to do it in mass rather than manually adding everyone individually.

regards
--rafi

Hi All,

I have installed Acidfree with Drupal 4.63 and it seemed to work ok. The first album is created and looks fine.
The problem is that only the first three thumbnails in the second album displays. The other thumbnails are simply not displaying.

Hi,

Out of the blue I started experiencing this error, and have no clue why, it is obviously a database error as I tried upgrading my implementation from 4.6.2-->4.6.5 so see if I could get rid of the errror, but no such luck.

The result of the error is that I can't see any of my blocks, including the admin block. If anyone has any help on this problem, I would greatly appreciate it.