Unhandled securityError in mxmlc command line but not in CS5 or Flash Builder 4

For some reason I am able to build/publish and run my project in cs5 and from inside flash builder 4开发者_Python百科 without problems, but once I step out to the command line all sorts of stupid things start happening, this being one of them. Is there a reason that the mxmlc is not able to handle this properly from the command line? I know of a solution with the crossdomains, but I've gotten along fine without that and this seems more like a bug than an actual project requirement. Also, the reason I am working with the commandline is because I need to automate the creation of flash projects, so if there is another method, I would be willing to try it.

Be certain that the compiler you target with the command line is as recent as the one you are using with Flash CS5 and Flash Builder. Would this by any chance be an AIR 2.7 Project?