BUG: Cannot import video - dynamiclinkmediaserver has encountered an error

Question

I'm receiving this error in LR4.1 RC. I was also receiving it when LR4.0 was installed. It's on a mac.
[/Volumes/BuildDisk/builds/DynamicLinkMediaServer1/main/shared/adobe/MediaCore/ASL/Foundat ion/Make/Mac/../../Src/DirectoryRegistry.cpp-283]
How do I fix this?
I've tried to import video content from my 5d mark II and it will not import video.

Answer 1

If it works in a different user acoutn, and you don't want to change accounts, the question really becomes, what is different between the two accounts. The only two differences, as far as Adobe and Lightroom are concerned, are the application preferences and the catalog.
The preference files store the settings for the program. These files are created on first launch and are updated each  time you close the application with the current state of the settings. Each user account has their own copy of these files. If you delete these files, then on next launch a new default set of files are created. When you create a new user account and lauch Lightroom, a new default set of these files is created for this account. If you delete these files on your main account, then on the next launch of Lightroom, a new set will be created. So as far as these files are concerned, Lightroom will be the same on both user accounts.
The catalog stores information of the images you work with in Lightroom. Each user account also gets it's own catalog, which is created on first launch as well. If you create a new catalog on your main account, then this is another way you can force Lightroom to be the same on both accounts.
If making the preferences and the catalog the same on both accounts does not fix the behavior, this mean that the cause of the problem is coming from outside of Lightroom itself. The two main categories of where things could be going wrong from this point is third-party applications and permissions.
Third-party applications, just like Lightroom itself, can have settings that are unique, causing them to behave differently between different user accounts. These different behaviors can mean that on one account they behave in such a way as to interfere with another application like Lightroom. We don't know of any program in particular that could be causing this behavior, nor what setting within such an application would be the root cause. In cases like these it is simply best to shut everything off and test Lightroom in a clean enviorment (similar to testing Lightroom in a new user account).
Every file and folder on your computer has a set of permissions for what individual users and groups of users (and the applications being run by those users) are allowed to do, such as reading, writting, or deleting. It is possible that there is a difference between the permissions for your regular user account and the new user account (which gets default settings for all files and folders) that restricts Lightroom's ability to use/read files.