Seems like most people here don't know what they are talking about ... surprise ...
You get the wm+ video to play? Then ignore all people who tell you need alternate .dol stuff.
What happens exactly after viewing the movie? 001 error? Is your modchip able to play 001 games without patching them or using a cIOS? I ask because i think the 001 check is done AFTER playing the movie. To check if it's a 001 issue try to load with NeoGamma with cIOS rev 7 or 13a. (all other cIOS do bad 002 patching, or don't have 001 patching*)
*cIOSrev14 does not have 001 patching, but smart 001 handling, which works on softmods but not on bad modchips