Source:  LOGIN.EXE

Explanation:  For DOS to run a program, it must allocate enough memory to run that program. Programs that are very large will frequently have this problem.

Possible Cause:  The workstation does not have enough memory to execute the command.

Action:  Increase the memory available to the workstation. See Resolving Workstation Memory Problems. If running from a shell (such as the WordPerfect shell), try running LOGIN from the command line.