After installing Ubercart alpha8 into a fresh Drupal 5.3, I can no longer enable blocks in regions. (At first I thought I just misunderstood something, but actually blocks are not working how they should.)

Basically, I see the correct list at /admin/build/block but whatever I do there does not stick. It does work in only one theme, Garland, but I think that is because that is the particular theme that was enabled when I installed ubercart. If I switch to another theme and try to enable modules for it, they never appear in that theme.

In the database, the appropriate records are never added to the blocks table.

To reproduce the problem:
- install drupal 5.3
- install ubercart plus dependencies
- install the Zen theme
- set Garland as the Admin theme (not sure if this is necessary for reproducing the problem.)
- make Zen the default theme
- attmpt to set blocks for the Zen them at /admin/build/block
- viewing public pages (non-admin pages) don't display the blocks that you set, and if you check the blocks table in the database, you should see that the expected records have not been added for the Zen theme.

Modules that I have enabled:

Color
Comment
Contact
Help
Menu
Path
Taxonomy
Tracker
Upload

Tables API

Token
uBrowser

Cart
Order
Product
Store

Attribute
Notify
Payment
Shipping Quotes
Shipping

Flatrate (shipping)

Test Gateway
Authorize.net
Credit Card

Workflow-ng
Workflow-ng UI