EDIT: aha! It appears to be the "Role Scoper" plugin causing this problem. Deactivating it restored the functionality. Consider this question null.
I've enabled the capability of uploading files for contributors.
However, I found a problem. When the contributor start a brand new post, he will see the "Upload/Insert" icons right above the post edit box.
However, if the contributor saves a draft then comes back later, then those icons will be gone!
I used the "Capability Manager" plugin to modify the contributor capabilities. I'll try another plugin and see if it makes a difference...
EDIT: nope, it doesn't make a difference. THe capabilities are stored in the database, and deactivating plugins leaves the capabilities as they were (they stay modified)...
This appears to be a wordpress bug. I'm gunna file a bug repot...
