After Upgrade 4.04 Program Won't Start

[Skybird74]

Lyrics are in-sync with 4.03 on Vista even while adding a singer's disk. Most everyone is having problems with 4.04 on Vista, but not 4.03. Only complaints I've read about 4.03 is key change problems (works on mine) and of course no MUX on videos. Both problems are handled by using 3.4 when needed. From what I have read & tried myself, 4.03 on Vista will cause you the least amount of problems. 4.05 should correct this.