Error: port activate failed: Registry error

[Lenore Horner]

> I get the following error. Could you let me know what I should do? Thank you!
> 
> $sudo port -f activate texlive-common
> Password:
> --->  The following versions of texlive-common are currently installed:
> --->      texlive-common @2009_1
> --->      texlive-common @2010_1
> Error: port activate failed: Registry error: Please specify the full
> version as recorded in the port registry.

Follow the instructions:  sudo port -f activate texlive-common @2010_1

Although the -f is worrisome.  Forcing usually means something else is wrong and can have unwanted consequences.

Lenore