In this alias, the only thing you do with variable is /inc.The /set line too long error mean that you've reached the line lenght limit of mIRC which is now ~ 4100 character (~ 940 before mIRC 6.32).
Since you're using a long string for each file found in the $findfile, and you've said in was reporting this only with many file, it's certainly this /var that cause the error.
Last edited by Wims; 31/01/09 10:34 AM.