'tla' is not recognized as an internal or external command, operable program or batch file. 'tla' is not recognized as an internal or external command, operable program or batch file. 'tla' is not recognized as an internal or external command, operable program or batch file. Checking if your kit is complete... Looks good Writing Makefile for PXP Microsoft (R) Program Maintenance Utility Version 7.10.3077 Copyright (C) Microsoft Corporation. All rights reserved. NMAKE : fatal error U1073: don't know how to make '' Stop.