The same thing has happened for me, for the record.
I only ever installed the full version, no demo.
I noticed about 10:30 PM Pacific Daylight Time, April 5, that either Caravelnet was down or my demos weren't uploading, nor was I able to download others' demos. The network connect icon had no antenna, but also no "
X"
. I quit and restarted the game, which sometimes worked (I believe), but I also got the blank box when I attempted to upload demos individually, nor did the mass "
Upload my scores"
button from the settings menu have any effect.
I see now, though, that everything has uploaded... so no long harm done, just kept me from optimizing as I went for a while...
BbJ, enjoying TCB very much.
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"
Stupid, stupid roach creatures!"
- Beethro Bonekin