04140107.txt 14-Apr-00 Clipper app on NT4 A tried and true Clipper application won't run on NT4 .... It fails in the middle of loading the files with the familiar "DOS error 4" message. Easy enough to fix on most machines with the "Files=100" command. But the user trying to demo the program can't get NT4 to set the files high enough...? He said he had to set an environment variable, and he did, and it *says* Files=100, but the loading still fails at exactly the same point: Dos error 4 comix/1003 open error: .\ptrepart.cdx Previously he had changed the Files= statement in the config.sys but that had no effect either. Any suggestions on how to deal with this in NT4 would be wonderful. That Dos error 4 is standing in the way of a sale! Thanks, Beth Hi Beth, With NT, the config.sys became config.nt and is located in C:\WINNT\SYSTEM32 No needd to reboot. HTH Eric Elizabeth, in C:\WINNT\SYSTEM32 there is a file called "config.nt". This file is used, if you run a dos app in a dos window. You can edit it without problems and it will be used the next time you start a dos app. So there is no rebooting. Just close the dos window before editing the file . The following settings work well for my clipper app: Dos=high, umb device=%SystemRoot%\system32\himem.sys files=120 NOTE: Most of the time a clipper apps will take 100% of CPU usage under NT which will slow down other NT apps. There is a patch for clipper programs working quite decently. Tell me if you need it. Regards Uwe Elizabeth, They need to modify the CONFIG.NT file in the WinNT\System32 subdirectory. This is the file that NT uses in lieu of config.sys. hth. Gary, Uwe, and Eric, thanks a lot for your replies. I'm sure this will solve the problem! Beth when searching in the properties of the .exe clipper app, you find a place where you choose the files to launch as "autoexec.bat" and "config.sys" adapt then the files hth bye Michel "Rackham" riding Belgium on his Suzuki GSX 750 L anno 1980