Problem Starting Up Vegas Movie Studio 9 HD On Windows 7

I recently bought an online version of this program, It installed correctly and everything worked fine until it came to actually opening the program, it went through a number of process until coming to what it says is "Initializing DirectX plugins" then a white tab opens called "PluginAdapter: Loading Plugins" which for whatever reason seems to go through every file in my (C Program Files folder until eventually getting the error "The instruction at 0x0a82f832 referenced memory at 0x00000000.The memory could not be read".
And then it crashes.I have tried to install it and startup the program on my other computer which has Windows XP and it works fine (no white tab about PluginAdapter opens).The computer on which I would like it to work has Windows 7 64bit which is why I have come to this forum