I've been experiencing this error after the first build in 2010 with ReSharper 5.0. I've been through the possible solutions, including the one in the error dialog, but to no avail.
The latest nightly build 5.01572.9 produces the same error.
The error message contains the following information:
Could not get VS command by its ID
47f03277-5055-4922-899c-0f7f30d26bf1 : 1144.