Fundamental font resource not defined?

[JAFisher44]

I am currently in the process of updating a data file. I do not have a lot of experience with authoring data files, but so far I have managed to muddle my way through.

Recently, however, I have run into a problem. I am trying to make a new unit, and when I try to access the tag list drop down from a specific tag group it gives me the following error:

Fundamental font resource not defined: '1'. Using default instead.
Fundamental font resource not defined: '2'. Using default instead.

after it displays each of these lines I have to press "OK" which is the only option. After pressing "OK" nothing happens. The tag list does not appear and I cannot add anything from that tag group.

Any help would be appreciated