Compiz check errors after Compiz working previously

[prickee]

When I run compiz-check this is what I get

Gathering information about your system...

Distribution: Ubuntu 9.04
Desktop environment: GNOME
Graphics chip: nVidia Corporation G70 [GeForce 7800 GS] (rev a2)
Driver in use: nvidia
Rendering method: Nvidia

Checking if it's possible to run Compiz on your system...

Checking for texture_from_pixmap... [FAIL]
Checking for non power of two support... [FAIL]
Checking for composite extension... [ OK ]
Checking for FBConfig... [FAIL]
Checking for hardware/setup problems... [SKIP]

At least one check had to be skipped:
Error: Unable to detect maximum 3D texture size

HELP!!!

[prickee]

BTW running on proprietary drivers....tried installing latest nvidia driver and I get a blank black screen after logging in..