Based on your feedback, we have published a new build of Expression Blend 2 August Preview that addresses two issues:
a) Expression Blend 2 August Preview will not require a license key to work. The software is designed to stop working on January 1st, 2008, no matter when you install it. If you had issues with the trial licenses expiring, you should un-install the previous August Preview build and install our refreshed bits.
b) You can create Silverlight 1.1 projects inside Expression Blend 2 August Preview again. This functionality was broken with the update to the Silverlight 1.1 Alpha Refresh bits.
You should un-install the previous August Preview build, before installing the refreshed bits. Instructions for downloading and installing the refreshed Expression Blend 2 August Preview build can be found here.
The Expression Blend team