It is from http://gtps.math.cmu.edu/tps.html
CMUCL says:
(EXPORT (P HELP S OK R ...)
#<The CORE package, 7/21 internal, 7/9 external>)
Source: Error finding source:
Error in function DEBUG::GET-FILE-TOP-LEVEL-FORM:
Source file no longer exists:
target:code/package.lisp.
Thank you!
This basically means you encountered some kind of error and you don't
have the CMUCL sources around. That isn't so important. The important
part is the error which should have been printed before this. You
didn't include that, so it's impossible to figure out the problem.
Ray