404 error on Project Workspaces

[Devon]

On the homepage of our pwa site when one of the projects listed under
Project Workspaces is clicked we get an 404 error. Does anyone have a
clue why?

I have checked that .net 2.0 is registered and allowed in iis. the iis
log is below

2007-12-13 23:36:12 W3SVC1583950033 XXX.XXX.XXX.83 GET /pwa/ISISIM+(Laz)
- 80 - XXX.XXX.XXX.103
Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+.NET+CLR+1.1.4322;+.NET+CLR+2.0.50727)
401 2 2148074254
2007-12-13 23:36:12 W3SVC1583950033 XXX.XXX.XXX.83 GET /pwa/ISISIM+(Laz)
- 80 DOMIN\user XXX.XXX.XXX.103
Mozilla/4.0+(compatible;+MSIE+7.0;+Windows+NT+5.1;+.NET+CLR+1.1.4322;+.NET+CLR+2.0.50727)
200 0 0

Thanks,
Devon