If a user command leaves UCMDS.SF exclusive tied, ŒUCMD fails with the error message "UCMDS FILE TIED". Example:
'C:\PROGRAM FILES\APL386\UCMDS.SF'ŒXFTIE 1001 ]?UCMDS FILE TIED
When UCMDS.SF is tied with ŒXFTIE, APL+Win should report the following error message:
XFHOST ERROR _sopen 1005 13 32 The process cannot access the file because it is being used by another process.
You apparently are not seeing this message. What are you doing that allows you to tie this file? Be sure to include the version number of your APL+Win system and Windows operating system.APL2000 Support