I plan to buy and install the new expansion on my building/DMing machine as soon as tomorrow, but will avoid building with any expansion content prior to this Sunday's session. As long as I don't build with expansion content, you will be able to log onto the server on Sunday even if you don't have the expansion (or so says Obsidian). There is an official NWN2 patch that will be out which will bring everyone (expansion and non-expansion) to the same version level. After Sunday's session, though, I may build with the new expansion assets, so Storm of Zehir will be required for the December 7 session. As noted previously, there is no session on November 30. {mos_fb_discuss:14}