I bit the bullet a couple of weeks ago and bought V4. Installed properly on Windows 7 machine. I opened a very large project that had about 105 Maxwell materials and dozens of lights. All the lights are now Form.z distant lights and all the materials have reverted to Form.z materials. On top of that all my camera settings and maxwell scene settings are gone. Start over. Lost about 4 days of work and now I have to call the client and make another lame excuse as to why I will be days late. Has anyone else experienced this and if so is there any way to get Maxwell settings back to where they were?